Willfulness Toolkit: Notice Letter Responses, Opinion of Counsel Engagements, and Read Factor Analyses

Summary. This toolkit collects the working papers of a willfulness dispute, each introduced by its purpose, owner, and timing and followed by drafting commentary tied to the governing authority. The recipient's templates cover a letter intake form, a communications instruction memo, a targeted litigation hold, an acknowledgment letter and a substantive response letter, an opinion-of-counsel engagement letter with a scope schedule, a design-around record, a privilege waiver map built on In re EchoStar, and an insurer tender letter. The patent owner's templates are a notice letter built to satisfy 35 U.S.C. 287 and support willfulness, and complaint paragraphs pleading knowledge. The litigation templates are an outline for a motion to dismiss willfulness allegations, an advice-of-counsel election notice, a motion in limine and jury instruction based on 35 U.S.C. 298, and a Read factor worksheet for the enhancement briefing. A running fictional example involving a machine-vision camera maker and a competitor, a timing tracker, and practical takeaways tie the templates together.

Willfulness is decided by documents. The jury asks whether the infringer acted deliberately, and the judge asks whether its conduct was egregious, and both answer mostly from what the company wrote down after it learned of the patent. The templates below are designed to make the right documents, keep the wrong ones from being written, and organize the record for the moment a court weighs it.

The short answer

• The recipient's papers create a good-faith record without waiving privilege. Intake, instructions, a hold, a measured response, and a documented redesign are all business records a jury can see.
• The opinion engagement letter decides the opinion's value before it is written. Scope, independence, complete facts, and timing are fixed at engagement.
• The waiver map is built before the election, not after. Reliance on advice waives privilege over its subject matter, In re EchoStar Communications Corp., 448 F.3d 1294 (Fed. Cir. 2006).
• The patentee's letter and complaint should prove knowledge with facts. Knowledge "continues to be a prerequisite to enhanced damages," WBIP, LLC v. Kohler Co., 829 F.3d 1317 (Fed. Cir. 2016).
• The Read worksheet turns the record into the enhancement brief. Courts want factor-by-factor findings tied to evidence.

How to use this toolkit

Each template states its purpose, its owner, and when to use it, then gives the template and a short drafting commentary. Bracketed capitals are placeholders. Number the willfulness record consistently: L- for letters, A- for privileged analyses, E- for engineering records, and W- for waiver-map entries, so that a log, a declaration, and a brief can refer to "E-3" and mean the same thing.

The sample entries follow one invented matter. Kestrel Optics, Inc., an Oregon maker of machine-vision cameras for factory inspection, receives a letter from Norhaven Imaging Corp., a Minnesota competitor, asserting U.S. Patent No. 10,7XX,XXX (the "'XXX patent"), which claims a camera that adjusts exposure based on a conveyor-speed signal. The letter names Kestrel's K-90 camera. Norhaven marks its own cameras. Kestrel's general counsel is Lena Hartwell; its engineering director is Sam Okonjo.

For the doctrine, see Willful Patent Infringement and Enhanced Damages After Halo: Knowledge, Opinions of Counsel, and Section 298. For the sequence of steps, see Managing Willfulness Risk After a Patent Notice Letter: A Practical Guide. For a task list, see Willfulness and Enhanced Damages Checklist: A Practical Checklist.

Template 1: Letter intake and triage form

Purpose: capture the facts that determine the next steps, in a privileged form. Owner: in-house counsel or outside counsel. When to use: on receipt of any letter that mentions a patent.

PRIVILEGED AND CONFIDENTIAL / ATTORNEY-CLIENT COMMUNICATION / PREPARED AT THE
DIRECTION OF COUNSEL IN ANTICIPATION OF LITIGATION

Matter: [PATENTEE] letter re [PATENT NOS.]            Ref: L-1
Received: [DATE] by [METHOD] at [ADDRESS/EMAIL]; addressed to [NAME, TITLE]
Persons who have seen it: [NAMES, DATES]
Sender: [ENTITY]; type: [COMPETITOR / ASSERTION ENTITY / UNIVERSITY / INDIVIDUAL]
Sender's litigation history: [SUITS, IPRs, OUTCOMES]
Patents:
  [NO.]: issued [DATE]; expires approx. [DATE]; maintenance fees [CURRENT/LAPSED];
  recorded assignee [NAME]; continuations pending [Y/N, NOS.]; PTAB/reexam [Y/N]
Claims identified: [LIST]; claim chart enclosed [Y/N]
Accused products named: [MODELS]; related products not named: [MODELS]
Revenue, accused products: past 6 years [$]; forecast [$/YR]
Patentee products and marking: [PRODUCTS; MARKED Y/N; VIRTUAL MARKING URL]
Deadline in letter: [DATE]; internal decision date: [DATE]
Initial assessment of DJ jurisdiction: [LIKELY / UNLIKELY; REASONS]
Next steps: [HOLD / ANALYSIS / RESPONSE / INSURANCE / CUSTOMERS]

Drafting commentary. The form is written by or for counsel, so it should be work product under Fed. R. Civ. P. 26(b)(3), but its underlying facts (the receipt date, who saw it) are discoverable, so record them accurately. The marking row matters because an unmarked patentee recovers only after actual notice under 35 U.S.C. § 287(a), and notice must charge "a specific accused product or device," Amsted Industries Inc. v. Buckeye Steel Castings Co., 24 F.3d 178 (Fed. Cir. 1994). The revenue row uses the six-year look-back in 35 U.S.C. § 286. In the Kestrel matter, the form records that Norhaven marks its cameras (so damages may reach back six years) and that Kestrel's K-70, which uses the same exposure logic, was not named.

Template 2: Communications instruction memo

Purpose: stop the creation of harmful informal documents and route knowledge to counsel. Owner: counsel. When to use: the same day the letter is received.

PRIVILEGED AND CONFIDENTIAL / ATTORNEY-CLIENT COMMUNICATION

To: [NAMES OF PERSONS WHO HAVE SEEN THE LETTER]
From: [COUNSEL]
Date: [DATE]
Re: Letter from [SENDER] dated [DATE]

The company has received a letter concerning patents owned by [SENDER]. I am
handling this matter as counsel. Please:

1. Do not forward the letter or discuss the patents, the letter, or [SENDER]'s
   allegations in email, chat, text, or meetings, except with me or at my request.
2. Do not write any opinion about whether our products are covered by the
   patents, or whether the patents are valid. If you have a view, call me.
3. If I ask you for technical information, I will do so in writing for the
   purpose of providing legal advice. Reply only to me and keep the subject line.
4. Do not delete or alter any documents or messages about [PRODUCTS] or
   [SENDER]. A separate preservation notice will follow.
5. This instruction is not a reason to avoid reading patents or doing your job.
   If you come across a patent you think is relevant, send it to me.

Questions: [COUNSEL CONTACT]

Drafting commentary. Privilege extends to employee communications made at counsel's direction to secure legal advice, Upjohn Co. v. United States, 449 U.S. 383 (1981). Paragraph 5 is deliberate. A policy that discourages employees from learning about patents can be cast as willful blindness, which the Supreme Court described in Global-Tech Appliances, Inc. v. SEB S.A., 563 U.S. 754 (2011) as deliberate action to avoid confirming a high probability of wrongdoing. The memo channels knowledge; it does not suppress it. For privilege mechanics, see Attorney-Client Privilege and Work Product for Businesses: Upjohn, In-House Counsel, and the Common Interest.

Template 3: Targeted litigation hold notice

Purpose: preserve the evidence of knowledge, investigation, and design history. Owner: counsel, with IT. When to use: within days of a specific letter (and, for the patentee, when enforcement is contemplated).

LEGAL HOLD NOTICE / PRIVILEGED AND CONFIDENTIAL

To: [CUSTODIANS]            Systems: [EMAIL, CHAT CHANNELS, REPOSITORIES, PLM]
Effective: immediately and until released in writing by [COUNSEL]

Preserve all documents and data, in any form, relating to:
(a) [PRODUCTS AND VERSIONS], including design files, source code and commit
    history, specifications, test data, and engineering change orders;
(b) sales, pricing, unit volumes, and customer instructions for those products
    from [DATE SIX YEARS BEFORE TODAY] forward;
(c) [SENDER], its products, and its patents, including competitive analyses;
(d) any prior patent searches or freedom-to-operate reviews for these products.

Do not delete, overwrite, or move these materials. Auto-deletion for the systems
above has been suspended as of [DATE]. Confirm receipt by [DATE].

Drafting commentary. Rule 37(e) sanctions apply to electronically stored information lost after the duty to preserve arose, and the most severe measures require intent to deprive, Fed. R. Civ. P. 37(e). Category (d) matters for both sides: an old clearance review may show good faith or prove knowledge. Kestrel's hold covers the "#k90-firmware" chat channel, where most engineering discussion happens. Full procedures are in Litigation Hold and Evidence Preservation Checklist: A Practical Checklist.

Template 4: Acknowledgment and information-request letter

Purpose: respond within the deadline, show seriousness, and gather information without admissions. Owner: counsel. When to use: as the first response to most specific letters.

[DATE]

[NAME, TITLE]
[SENDER]
[ADDRESS]

Re: Your letter of [DATE] regarding U.S. Patent No(s). [NOS.]

Dear [NAME]:

We represent [RECIPIENT] and write in response to your letter of [DATE].
[RECIPIENT] respects valid intellectual property rights and is reviewing the
patent(s) you identified.

To permit a complete review, please provide:
1. Each claim of each patent that [SENDER] contends is infringed, and the
   specific [RECIPIENT] product(s) and version(s) accused under each claim;
2. For each accused product, the basis for the contention, including any
   testing or analysis;
3. Identification of any [SENDER] products that practice the patent(s) and how
   they are marked;
4. Any licenses granted under the patent(s), or a summary of their terms, and
   any proposed terms; and
5. Any litigation, IPR, or reexamination involving the patent(s) not of record.

Nothing in this letter is an admission of any kind, and [RECIPIENT] reserves
all rights and defenses. Please direct further correspondence to me.

Sincerely,
[COUNSEL]

Drafting commentary. The letter says nothing about how the product works and does not assert noninfringement, which keeps it from previewing the defense or from sharpening the declaratory judgment controversy before the company has decided whether it wants one. Under MedImmune, Inc. v. Genentech, Inc., 549 U.S. 118 (2007), and SanDisk Corp. v. STMicroelectronics, Inc., 480 F.3d 1372 (Fed. Cir. 2007), the sender's letter may already suffice, but a recipient's assertion of a right to continue without a license can confirm adverse positions. Request 3 tests marking; request 4 tests the royalty story. If the parties move into negotiations, add a statement that communications are compromise negotiations under Fed. R. Evid. 408, and consider a separate confidentiality agreement because Rule 408 is a rule of admissibility, not confidentiality.

Template 5: Substantive response letter

Purpose: state a considered noninfringement or invalidity position. Owner: counsel. When to use: only after privileged analysis, and only when the company is prepared to stand behind the position and accept that it may support declaratory judgment jurisdiction.

[DATE]

Re: U.S. Patent No. [NO.]; [RECIPIENT] [PRODUCT]

Dear [NAME]:

We have reviewed the [NO.] patent and the materials you provided on [DATE].
[RECIPIENT] does not infringe any claim of the patent, and the asserted claims
are invalid, for reasons including the following.

Noninfringement. Claim [N] requires [LIMITATION, QUOTED]. The [PRODUCT] does not
[DESCRIBE THE DIFFERENCE AT THE LEVEL OF THE CLAIM LANGUAGE, WITHOUT DISCLOSING
CONFIDENTIAL DESIGN DETAIL]. [IF APPLICABLE: The prosecution history, including
the applicant's statements of [DATE], forecloses any contention that [ALTERNATIVE]
is equivalent.]

Invalidity. [REFERENCE], published [DATE], discloses [ELEMENTS]. [OPTIONAL: We
are prepared to provide a claim chart.]

[RECIPIENT] therefore does not require a license. This letter is not a complete
statement of [RECIPIENT]'s positions, and all rights and defenses are reserved.

Sincerely,
[COUNSEL]

Drafting commentary. Keep the letter short and claim-focused. Do not refer to advice of counsel or an opinion unless the company has decided to rely on it, because disclosing the conclusion of advice can support a waiver argument under Fed. R. Evid. 502(a). Remember that a stated belief of invalidity is relevant to willfulness but is not a defense to inducement, Commil USA, LLC v. Cisco Systems, Inc., 575 U.S. 632 (2015); if inducement is a risk, lead with noninfringement. If the company may file an IPR, do not file a declaratory judgment claim of invalidity first, 35 U.S.C. § 315(a)(1). For forum considerations if the letter prompts a suit, see Filing or Defending a Declaratory Judgment Action: A Practical Guide.

Template 6: Opinion-of-counsel engagement letter and scope schedule

Purpose: fix the scope, independence, inputs, and timing of a formal opinion the client may rely on. Owner: the client's general counsel and opinion counsel. When to use: once the client decides that a formal opinion is worth the waiver.

[DATE]

[CLIENT GENERAL COUNSEL]
[CLIENT]

Re: Engagement for opinion regarding U.S. Patent No(s). [NOS.]

1. Scope. [FIRM] will provide a written opinion addressing whether the products
   listed in Schedule A infringe, literally or under the doctrine of equivalents,
   the claims listed in Schedule A, and whether those claims are invalid or
   unenforceable on the grounds listed in Schedule A. [FIRM] will not represent
   [CLIENT] in any litigation concerning these patents.
2. Independence. [FIRM] will reach its own conclusions. [CLIENT] understands that
   the opinion may conclude that one or more products infringe or that one or
   more claims are valid.
3. Materials. [CLIENT] will provide the materials in Schedule B and any other
   materials [FIRM] requests. [CLIENT] represents that it will not knowingly
   withhold information material to the analysis, including any information
   about the development history of the products and any prior knowledge of
   [PATENTEE]'s products.
4. Reliance and waiver. [CLIENT] may rely on the opinion. [CLIENT] understands
   that if it relies on the opinion in litigation, it will likely waive
   privilege over communications with counsel concerning the same subject matter,
   and [FIRM] attorneys may be witnesses.
5. Updates. The opinion speaks as of its date. [CLIENT] will notify [FIRM] of
   any change to the products, and [FIRM] will advise whether an update is needed.
6. Timing. [FIRM] will deliver a draft by [DATE] and a final opinion by [DATE].
7. Fees. [TERMS].

Schedule A: Patents [NOS.]; claims [LIST]; products and versions [MODELS,
FIRMWARE/HARDWARE REVISIONS]; grounds [102/103/112/101; inequitable conduct
if facts warrant]
Schedule B: patents and full file histories; cited and known prior art;
schematics, source code excerpts, and specifications for each product version;
development history; [PATENTEE] letters; any prior searches

Drafting commentary. The engagement letter is likely to be produced if the client relies on the opinion, so write it for that audience. Paragraph 1's exclusion of litigation work keeps opinion counsel separate from trial counsel, which matters because reliance on opinion counsel ordinarily does not waive privilege over trial counsel's communications, In re Seagate Technology, LLC, 497 F.3d 1360 (Fed. Cir. 2007) (en banc). It also respects the lawyer-witness concerns reflected in ABA Model Rule 3.7. Paragraph 3 responds to the cases in which an opinion was discounted because counsel lacked key facts, nCube Corp. v. SeaChange International, Inc., 436 F.3d 1317 (Fed. Cir. 2006), and to the Global-Tech facts, where counsel was not told the product was a copy. Schedule A should list product versions precisely; an opinion about firmware 3.1 may not cover 3.4. Competence is judged by whether the opinion would instill a reasonable belief that a court might hold the patent invalid, not infringed, or unenforceable, Ortho Pharmaceutical Corp. v. Smith, 959 F.2d 936 (Fed. Cir. 1992). Invalidity conclusions should be written against the clear-and-convincing standard that applies in court, Microsoft Corp. v. i4i Ltd. Partnership, 564 U.S. 91 (2011). In the Kestrel matter, Schedule A lists the K-90 and the unnamed K-70, firmware 2.0 through 2.6, because both use the same exposure logic.

Template 7: Design-around record

Purpose: document a good-faith redesign in ordinary business records, without disclosing legal advice. Owner: engineering, reviewed by counsel. When to use: whenever a product is changed in response to patent risk.

ENGINEERING CHANGE ORDER [ECO NO.]                         Ref: E-[N]

Product(s): [MODELS AND VERSIONS]
Change: [DESCRIPTION OF THE TECHNICAL CHANGE IN NEUTRAL ENGINEERING TERMS]
Reason: Reduce intellectual property risk; [OTHER BUSINESS REASONS, IF ANY]
Requested by: [NAME], [DATE]       Approved by: [NAME], [DATE]
Engineering review completed: [DATE]   Legal review completed: [DATE] (no details)
Implementation: firmware/hardware revision [REV] effective [DATE]
Existing inventory: [REWORK / SELL THROUGH UNTIL DATE / SCRAP]
Field units: [UPDATE PLAN AND DATE, IF ANY]
Customer documentation updated: [DOC NOS., DATE]
Attachments: [TEST RESULTS SHOWING PERFORMANCE OF REVISED DESIGN]

Drafting commentary. The record states what changed and when, and that the change was made to reduce IP risk; it does not say that the old design infringed or what counsel advised. Designing around is lawful and encouraged, State Industries, Inc. v. A.O. Smith Corp., 751 F.2d 1226 (Fed. Cir. 1985), and a prompt redesign is the "remedial action" factor in Read Corp. v. Portec, Inc., 970 F.2d 816 (Fed. Cir. 1992). A defendant that took pains to design around a patent was spared enhancement in Westvaco Corp. v. International Paper Co., 991 F.2d 735 (Fed. Cir. 1993). The inventory and field-unit rows close the most common gap: sales of old-design stock long after the redesign was available. For Kestrel, ECO 2291 replaces the conveyor-speed exposure loop with frame-to-frame image analysis in firmware 3.0 for both the K-90 and K-70.

Template 8: Privilege waiver map

Purpose: show, before the company elects to rely on advice, exactly what it would have to produce. Owner: trial counsel (not opinion counsel). When to use: before the advice-of-counsel election, and whenever new advice is given.

Drafting commentary. EchoStar held that reliance on advice waives privilege over communications with any counsel on the same subject, in-house or outside, and documents that reference such communications, but generally not counsel's uncommunicated work product. Row W-3 is the classic problem: an earlier informal view that is less favorable than the formal opinion will be produced if the company relies, and it will be the patentee's first exhibit. The map lets the client make the reliance decision knowing that. Federal Rule of Evidence 502(a) limits subject-matter waiver to intentional disclosures on the same subject that "ought in fairness" be considered together, and the Federal Circuit applies its own law to waiver in the willfulness context, as EchoStar illustrates. Prepare the corresponding privilege log consistently; see Preparing a Privilege Log: A Practical Checklist.

Template 9: Insurer tender letter

Purpose: preserve any coverage. Owner: risk manager or counsel. When to use: promptly after a specific letter, within each policy's notice requirement.

[DATE]
[CARRIER CLAIMS ADDRESS]
Re: Notice of claim or potential claim; Policy No. [NO.]; Insured: [NAME]

[INSURED] gives notice of a letter dated [DATE] from [SENDER] alleging that
[INSURED]'s [PRODUCTS] infringe U.S. Patent No(s). [NOS.] (copy enclosed).
[INSURED] requests that [CARRIER] acknowledge this notice, confirm its coverage
position, and identify any requirements for consent to counsel or settlement.
[INSURED] does not waive any rights under the policy. Please direct
correspondence to [CONTACT].

Drafting commentary. Commercial general liability forms generally exclude intellectual property infringement, and specialized IP policies usually exclude claims known before the policy period, so expectations should be modest. Give notice anyway: late notice can forfeit coverage that exists, and some policies cover defense costs even where indemnity is excluded. Do not assume coverage for multiplied damages. For coverage disputes and tender practice, see Insurance Coverage Toolkit: Placing, Tendering, and Litigating Claims.

Template 10: Patentee notice letter

Purpose: give actual notice under § 287(a), establish knowledge for willfulness, and open discussions. Owner: the patent owner's counsel. When to use: before suit, after the patentee has confirmed title, built an infringement analysis, and decided how it will respond to a declaratory judgment action.

[DATE]
[NAME, TITLE: CEO OR GENERAL COUNSEL]
[RECIPIENT]
[ADDRESS]                                            By [TRACKABLE METHOD]

Re: U.S. Patent No. [NO.] and [RECIPIENT]'s [PRODUCT NAME AND MODEL]

Dear [NAME]:

We represent [PATENTEE], the owner of U.S. Patent No. [NO.] (the "[NO.] patent"),
a copy of which is enclosed. [PATENTEE] believes that [RECIPIENT]'s [PRODUCT AND
MODEL], which [RECIPIENT] [MAKES/SELLS/IMPORTS], infringes at least claim [N] of
the [NO.] patent. A claim chart is enclosed.

[PATENTEE] [OFFERS TO DISCUSS A LICENSE / REQUESTS THAT RECIPIENT CEASE].
Please respond by [DATE].

[PATENTEE] marks its products practicing the [NO.] patent [ON THE PRODUCT / AT
VIRTUAL MARKING ADDRESS].

Sincerely,
[COUNSEL]

Drafting commentary. The letter is built around Amsted's requirement of "a specific charge of infringement by a specific accused product," and it comes from the owner's counsel, satisfying Lans v. Digital Equipment Corp., 252 F.3d 1320 (Fed. Cir. 2001). A letter identifying the patent and product and suggesting a license was sufficient notice in Gart v. Logitech, Inc., 254 F.3d 1334 (Fed. Cir. 2001). The same specificity likely creates declaratory judgment jurisdiction, as in Hewlett-Packard Co. v. Acceleron LLC, 587 F.3d 1358 (Fed. Cir. 2009); be ready to file if forum matters. The infringement analysis behind the chart should satisfy Fed. R. Civ. P. 11(b) if suit follows. Check state bad-faith demand statutes for any required content. For the enforcement decision itself, see Do You Have to Enforce Your Patent? Duty, Demand Letters, and the Cost of Doing Nothing.

Template 11: Complaint paragraphs pleading willfulness

Purpose: plead knowledge and deliberate infringement with facts. Owner: patentee's litigation counsel. When to use: in the original complaint where pre-suit facts exist, or in an amended complaint after discovery.

WILLFUL INFRINGEMENT

[N]. [DEFENDANT] has known of the [NO.] patent since at least [DATE], when
[PATENTEE] sent [DEFENDANT]'s [TITLE], [NAME], a letter identifying the [NO.]
patent, claim [N], and the [PRODUCT] as infringing, and enclosing a claim chart.
[DEFENDANT] acknowledged receipt on [DATE]. (Exhibit [X].)

[N+1]. [ADDITIONAL KNOWLEDGE FACTS: prior licensing discussions on [DATES];
citation of the [NO.] patent in [DEFENDANT]'s own patent application No. [NO.];
[DEFENDANT]'s analysis of [PATENTEE]'s product on [DATE].]

[N+2]. After receiving notice, [DEFENDANT] continued to make, use, sell, offer to
sell, and import the [PRODUCT] without material change, and [introduced the
[NEW PRODUCT], which operates in the same manner with respect to claim [N]].

[N+3]. [DEFENDANT] knew or should have known that its conduct infringed the [NO.]
patent, and its infringement since [DATE] has been and continues to be deliberate
and intentional.

PRAYER: ... (c) a finding that [DEFENDANT]'s infringement has been willful and an
award of increased damages under 35 U.S.C. § 284; (d) a finding that this case
is exceptional and an award of attorney fees under 35 U.S.C. § 285 ...

Drafting commentary. Plausibility under Bell Atlantic Corp. v. Twombly, 550 U.S. 544 (2007), and Ashcroft v. Iqbal, 556 U.S. 662 (2009), requires facts, and the Federal Circuit has explained that willfulness requires "no more than deliberate or intentional infringement," Eko Brands, LLC v. Adrian Rivera Maynez Enterprises, Inc., 946 F.3d 1367 (Fed. Cir. 2020), so paragraph N+3 tracks that phrasing rather than "wanton" or "malicious." Do not plead that the defendant failed to obtain an opinion; 35 U.S.C. § 298 bars that use. If the only knowledge is from the complaint itself, expect a motion under the reasoning of ZapFraud, Inc. v. Barracuda Networks, Inc., 528 F. Supp. 3d 247 (D. Del. 2021), and consider limiting the claim to post-filing conduct and pleading it in an amended complaint; see Amendment Toolkit: Redlined Pleadings, Rule 16 Good Cause Showings, and Futility Oppositions.

Template 12: Motion to dismiss willfulness allegations (outline)

Purpose: narrow the case and willfulness discovery early. Owner: defendant's litigation counsel. When to use: with the first response to the complaint under Fed. R. Civ. P. 12(b)(6).

I.   Introduction: the complaint pleads willfulness by label; no facts show
     pre-suit knowledge of [PATENT(S)] or deliberate infringement.
II.  Legal standard: Twombly/Iqbal; willfulness elements (knowledge of the
     patent; infringement after knowledge; knowledge or deliberateness as to
     infringement) (WBIP; Eko; Bayer v. Baxalta).
III. Argument
     A. No plausible pre-suit knowledge: "on information and belief"
        allegations; general awareness of [PATENTEE]'s portfolio; knowledge of a
        related application or foreign counterpart is not knowledge of the
        asserted patent (State Industries).
     B. [If applicable] Notice letter did not identify [PATENT/PRODUCT].
     C. [If applicable] Post-suit theory based solely on the complaint
        (ZapFraud and cases collected; acknowledge contrary authority).
     D. Enhanced damages and fees requests fall with willfulness [TO THE EXTENT
        THEY DEPEND ON IT].
IV.  Relief: dismissal of willfulness [and indirect infringement] claims
     [without prejudice]; [alternatively, stay willfulness discovery].

Drafting commentary. Knowledge of the patent is a prerequisite (WBIP), and knowledge plus infringement is not enough, Bayer HealthCare LLC v. Baxalta Inc., 989 F.3d 964 (Fed. Cir. 2021). Knowledge of an application is not knowledge of a patent, State Industries. Be candid about the district split on complaint-supplied knowledge; a motion that ignores contrary decisions in the same court loses credibility. Even a dismissal without prejudice often matters, because it can narrow discovery into the defendant's privileged advice until the patentee can plead facts.

Template 13: Advice-of-counsel election notice

Purpose: make or decline the reliance election on the court's schedule. Owner: defendant's trial counsel. When to use: by the scheduling order or local patent rule deadline under Fed. R. Civ. P. 16.

[CAPTION]
DEFENDANT'S NOTICE REGARDING RELIANCE ON ADVICE OF COUNSEL

Pursuant to [ORDER/LOCAL RULE], Defendant [NAME] states that it [WILL / WILL NOT]
rely on advice of counsel as a defense to Plaintiff's allegations of willful
infringement [and induced infringement].

[IF RELYING:] Defendant will rely on the opinion(s) of [FIRM] dated [DATES]
concerning U.S. Patent No(s). [NOS.]. Defendant is producing the opinion(s) and
documents within the scope of the resulting waiver, Bates [RANGE], together with
a log of withheld trial-counsel materials. Defendant does not waive privilege or
work-product protection as to communications with or work product of trial
counsel, [FIRM], consistent with In re Seagate Technology, LLC, 497 F.3d 1360
(Fed. Cir. 2007) (en banc).

[IF NOT RELYING:] Under 35 U.S.C. § 298, Defendant's decision not to present
advice of counsel may not be used to prove willful infringement or intent to
induce infringement.

Drafting commentary. The waiver map (Template 8) should be final before this notice is filed. The non-reliance version puts § 298 on the record early, setting up the motion in limine. The production under the reliance version should follow the EchoStar categories.

Template 14: Section 298 motion in limine and proposed instruction

Purpose: keep the absence of an opinion out of the willfulness case and frame the jury's question. Owner: defendant's trial counsel. When to use: pretrial.

MOTION IN LIMINE NO. [N]: To preclude evidence or argument that Defendant did not
obtain or present advice of counsel

1. 35 U.S.C. § 298 provides that the failure to obtain or present advice of
   counsel "may not be used to prove that the accused infringer willfully
   infringed the patent or that the infringer intended to induce infringement."
2. Knorr-Bremse, 383 F.3d 1337 (en banc): no adverse inference from invoking
   privilege or failing to obtain an opinion.
3. Requested order: Plaintiff shall not offer evidence, elicit testimony, or argue
   that Defendant did not obtain, did not produce, or did not rely on an opinion
   of counsel, and shall not ask any witness whether Defendant consulted a
   lawyer about the patent. [Plaintiff may present evidence of Defendant's other
   conduct after learning of the patent, subject to Rule 403.]
4. Fed. R. Evid. 403: any marginal relevance is outweighed by unfair prejudice.

PROPOSED INSTRUCTION: WILLFULNESS
If you find that [DEFENDANT] infringed a valid claim, you must also decide whether
[PLAINTIFF] has proved by a preponderance of the evidence that the infringement was
willful. To show willfulness, [PLAINTIFF] must prove that [DEFENDANT] knew of the
[NO.] patent and that its infringement was deliberate or intentional. Knowledge of
the patent alone is not enough. You must consider the totality of the
circumstances, including whether [DEFENDANT] acted consistently with the standards
of behavior for its industry, whether it held a reasonable belief that it did not
infringe or that the patent was invalid, and whether it made a good-faith effort to
avoid infringement, for example by attempting to design around the patent. You may
not consider, for any purpose, whether or not [DEFENDANT] obtained or presented
advice of counsel. [PLAINTIFF'S ALTERNATIVE, PER ARCTIC CAT: ... or that
[DEFENDANT] acted despite a risk of infringement that was known or so obvious that
it should have been known.]

Drafting commentary. The motion relies on § 298, Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbH v. Dana Corp., 383 F.3d 1337 (Fed. Cir. 2004) (en banc), and Fed. R. Evid. 403. The bracketed sentence in paragraph 3 is a realistic concession; courts generally let patentees prove what the defendant did after notice. The instruction's "deliberate or intentional" phrasing comes from Eko; the "knowledge alone is not enough" sentence from Bayer. Patentees will offer the alternative approved in Arctic Cat Inc. v. Bombardier Recreational Products Inc., 876 F.3d 1350 (Fed. Cir. 2017). Preserve objections under Fed. R. Civ. P. 51. Compare the current Federal Circuit Bar Association and AIPLA model instructions. For motion practice, see Motion in Limine Toolkit: Standard Motion Banks, Opposition Frameworks, and Trial Objection Plans.

Template 15: Read factor worksheet

Purpose: organize the record for the enhancement decision, and stress-test exposure earlier. Owner: both sides' trial teams; a version can be prepared by the recipient's counsel early, under privilege, as a risk tool. When to use: during discovery, before trial, and for post-trial briefing.

Drafting commentary. Enhancement is for the court and requires a reasoned explanation; the Federal Circuit has vacated enhancements that lacked one, Polara Engineering, Inc. v. Campbell Co., 894 F.3d 1339 (Fed. Cir. 2018), and affirmed those grounded in detailed findings, Georgetown Rail Equipment Co. v. Holland L.P., 867 F.3d 1229 (Fed. Cir. 2017). The governing standard is Halo's: enhancement is a punitive sanction for egregious conduct, judged by the infringer's knowledge at the time, Halo Electronics, Inc. v. Pulse Electronics, Inc., 579 U.S. 93 (2016), and the statute caps it at three times, 35 U.S.C. § 284. Willfulness does not compel enhancement; the judge may find the conduct willful but not egregious enough to enhance. The same worksheet supports or opposes an exceptional-case motion under 35 U.S.C. § 285 and Octane Fitness, LLC v. ICON Health & Fitness, Inc., 572 U.S. 545 (2014). For the base award, see Patent Damages Toolkit: Royalty Models, Expert Reports, and Daubert Motions.

Sample entries for Kestrel. Factor 1: no evidence of copying; Kestrel's exposure logic predates Norhaven's product launch (E-0, a 2019 design notebook). Factor 2: formal opinion (W-5) delivered nine weeks after the letter; ECO 2291 (E-1). Factor 6: K-90 sales on firmware 2.x continued for five months after notice. Factor 7: firmware 3.0 released to new units in month 5 and pushed to field units in month 7. A realistic defense position: no enhancement, or a modest one confined to the five-month period.

Template 16: Timing tracker

Practical takeaways

1. Use Templates 1 to 3 on the first day; most willfulness damage is done in the first week.
2. Send Template 4 before Template 5; information first, positions later.
3. Write the opinion engagement (Template 6) as if the patentee will read it, because it may.
4. Build the waiver map (Template 8) before deciding to rely.
5. Record redesigns in business records (Template 7) that show dates, scope, and inventory decisions.
6. Patentees: be specific in letters (Template 10) and plead facts (Template 11).
7. Bring the Read worksheet (Template 15) into discovery planning, not just post-trial briefing.

This toolkit is general information, not legal advice for any particular situation. Adapt every template to the facts, the forum, and current law, including local patent rules and model jury instructions.

Related Documents

Related Articles

• Willful Patent Infringement and Enhanced Damages After Halo: Knowledge, Opinions of Counsel, and Section 298: the doctrine behind each template.
• Patent Damages: Reasonable Royalties, Lost Profits, Apportionment, and Enhancement: the compensatory award.
• Declaratory Judgment Actions: Jurisdiction, Discretion, and the Race to the Courthouse: how a letter creates jurisdiction.

Related Guides

• Managing Willfulness Risk After a Patent Notice Letter: A Practical Guide: when to use each template.
• Filing or Defending a Declaratory Judgment Action: A Practical Guide: if the letter leads to a race to court.
• Pleading and Proving Induced and Contributory Patent Infringement: A Practical Guide: parallel intent issues.

Related Checklists

• Willfulness and Enhanced Damages Checklist: A Practical Checklist: task list for both sides.
• Litigation Hold and Evidence Preservation Checklist: A Practical Checklist: companion to Template 3.
• Preparing a Privilege Log: A Practical Checklist: companion to Template 8.

Related Toolkits

• Patent Damages Toolkit: Royalty Models, Expert Reports, and Daubert Motions: damages models and expert materials.
• Freedom to Operate and IP Clearance Toolkit: Clearing the Path Before You Launch: clearance before any letter.
• Declaratory Relief Toolkit: Complaints, Jurisdictional Briefing, and Discretionary Dismissal: forms if you file first.
• Motion in Limine Toolkit: Standard Motion Banks, Opposition Frameworks, and Trial Objection Plans: companion to Template 14.