Provisional Patent Application Checklist: A Practical Checklist

Summary. This checklist turns the provisional patent application process into tasks that an inventor, in-house lawyer, or outside practitioner can assign, track, and check off. It is organized in twelve phases, from threshold decisions and disclosure control through ownership, invention capture, drafting, figures and claims, entity status, cover sheet data, filing, the twelve-month management period, and conversion. Each item names the governing statute, rule, or case and adds a short practical note where one helps. Red-flag boxes mark the points where priority, ownership, or foreign rights are most often lost. A deadlines table, a phase for auditing someone else's provisional, a short worked example, and a list of common failure points close the checklist.

Provisional applications fail quietly. Nothing at the Patent Office tells an applicant that the document on file will not support the claims the business needs, that the contractor who designed the key part never assigned it, or that the foreign deadline passed last Tuesday. The failures show up years later, in an inter partes review petition or a diligence call. This checklist is designed to catch them while they are still cheap to fix.

How to use this checklist

• Assign an owner to each phase. Typical owners: the founder or product lead (Phases 1, 2, 4), counsel (Phases 3, 5 to 9, 11), and a docketing person or paralegal (Phases 9 and 10).
• Work in order, but start Phases 2 and 3 on day one. Disclosure control and ownership cannot wait for drafting.
• Record the date each item is completed and keep the record with the matter file. A dated checklist is useful evidence of diligence, corroboration of conception, and the reasonable measures that trade secret law requires.
• Treat red-flag boxes as stop points. Do not file, disclose, or convert until a red flag is resolved or deliberately accepted in writing.
• Use the companion documents. The doctrine is in Provisional Patent Applications: What They Protect, What They Do Not, and How to Keep the Priority Date; the narrative procedure is in Preparing and Filing a Provisional Patent Application: A Practical Guide; fillable forms for many items are in the Provisional Application Toolkit: Invention Capture Templates, Written Description Audits, and Conversion Calendars.

Phase 1: Threshold decisions

• Confirm the invention is a utility invention. Provisionals are available only for utility (and plant) applications. Designs cannot claim a provisional's benefit; 35 U.S.C. § 172 excludes § 119(e) for designs. Note: if the product's appearance matters, plan a design application separately; see Choosing Between a Design and Utility Patent: A Practical Checklist.
• Decide patent versus trade secret for each feature. Visible or reverse-engineerable features favor patents; internal processes and server-side methods may be better kept secret under 18 U.S.C. § 1839(3). Note: a provisional preserves both options for up to a year because it is never published on its own, 35 U.S.C. § 122(a).
• Check subject-matter eligibility risk for software, diagnostics, and business methods under 35 U.S.C. § 101 and Alice Corp. v. CLS Bank International, 573 U.S. 208 (2014). Note: the technical detail that helps eligibility must be in the provisional; see Patent Subject-Matter Eligibility After Alice: A Practical Checklist.
• Identify any federal funding. If an SBIR, STTR, grant, or contract supported the work, list the agency and award number and calendar the disclosure, election, and filing deadlines of 35 U.S.C. § 202(c).
• Decide whether foreign protection is plausible. If yes, the provisional must precede every public disclosure, because most countries lack the U.S. grace period of 35 U.S.C. § 102(b)(1).
• Choose provisional or nonprovisional. A provisional fits when disclosure is imminent, the design is still changing, or the budget must be deferred. Note: patent term runs from the nonprovisional's filing date, 35 U.S.C. § 154(a)(2), so a provisional can extend the patent's life by up to a year.

Phase 2: Disclosure control and pre-pitch policy

• List every planned or past disclosure: talks, abstracts, posters, papers, theses, demo days, investor pitches, customer pilots, quotes, purchase orders, websites, social posts, app store listings, code repositories, grant reports.
• Identify the earliest event. That date, minus a margin of at least two business days, is the filing deadline.
• Check for disclosures that already happened. A disclosure more than a year ago bars U.S. claims to what it disclosed under § 102(a)(1); a disclosure within the year is excepted in the United States only, under § 102(b)(1)(A).
• Check for commercial offers. An offer to sell an invention that is ready for patenting triggers the on-sale bar, Pfaff v. Wells Electronics, Inc., 525 U.S. 55 (1998), even if the buyer must keep it confidential, Helsinn Healthcare S.A. v. Teva Pharmaceuticals USA, Inc., 586 U.S. 123 (2019).
• Adopt a written pre-pitch disclosure policy (one page): no technical disclosure outside the company before filing except under a signed NDA; marketing and investor materials reviewed by counsel; no uploads of technical material to public AI tools. Note: see Building a Generative AI Use Policy That Protects Trade Secrets: A Practical Guide.
• Get NDAs signed by anyone outside the company who will see technical details before filing. Note: many investors will not sign; then show results, not mechanisms. See Drafting Enforceable Non-Disclosure Agreements for Technology Transactions.
• Rewrite abstracts and decks to describe the problem and results without the mechanism until the provisional is on file.
• Check posters and theses. A poster displayed at a meeting can be a printed publication, In re Klopfenstein, 380 F.3d 1345 (Fed. Cir. 2004), as can a cataloged thesis, In re Hall, 781 F.2d 897 (Fed. Cir. 1986).

Red flag: disclosure already happened. If the invention was publicly disclosed, offered for sale, or used in public before filing, stop and assess before drafting. U.S. rights may survive under the one-year grace period; European and many other rights likely do not. Record exactly what was disclosed, when, and to whom.

Phase 3: Ownership and inventorship

• List every contributor to every feature that may be claimed: founders, employees, contractors, university collaborators, customers, advisors.
• Confirm present-tense assignment language ("hereby assigns") in each contributor's agreement. A present assignment of future inventions transfers title automatically, FilmTec Corp. v. Allied-Signal Inc., 939 F.2d 1568 (Fed. Cir. 1991); "agrees to assign" does not. See Board of Trustees of Leland Stanford Junior University v. Roche Molecular Systems, Inc., 563 U.S. 776 (2011).
• Obtain a specific assignment of the invention from anyone whose agreement is missing, future-tense, or ambiguous. Note: institutional policy language may not be a present assignment, Omni MedSci, Inc. v. Apple Inc., 7 F.4th 1148 (Fed. Cir. 2021).
• Check prior-employer claims for founders who worked on related technology at a previous job.
• Build a contribution map: for each feature, who conceived it and when. Conception is the touchstone, Burroughs Wellcome Co. v. Barr Laboratories, Inc., 40 F.3d 1223 (Fed. Cir. 1994); a contribution to one claim is enough, 35 U.S.C. § 116(a) and Pannu v. Iolab Corp., 155 F.3d 1344 (Fed. Cir. 1998).
• Record AI tool use in conception. Only natural persons can be inventors, Thaler v. Vidal, 43 F.4th 1207 (Fed. Cir. 2022). Note: record the human contribution to each feature. In November 2025 the Office rescinded its February 2024 AI-assisted inventorship guidance and replaced it with guidance applying the same conception standard to all inventions, with AI treated as a tool (Revised Inventorship Guidance for AI-Assisted Inventions, 90 Fed. Reg. 54636 (Nov. 28, 2025)).
• Note where each feature was conceived (country), for the foreign filing license analysis in Phase 9.
• Plan recordation of assignments with the Office, which protects against later purchasers under 35 U.S.C. § 261.

Red flag: a contributor has not assigned. A missing assignment is a co-owner, and a co-owner can license competitors. Resolve before filing if at all possible. See Patent Ownership, Assignments, and Standing: Chain-of-Title Problems That Sink Cases and Employee Invention Assignment Agreements: Drafting for Enforceability Across Jurisdictions.

Phase 4: Invention capture

• Collect materials: sketches, CAD, code, schematics, test data, notebooks, prior decks, internal emails describing the idea.
• Schedule capture interviews with each inventor (sixty to ninety minutes per major feature).
• For each feature, record: problem solved; prior approaches; components and connections; steps and order; alternatives considered, built, or rejected; working ranges and preferred values; failure modes and limits; likely design-arounds; next-generation versions.
• Ask the design-around question explicitly: what would a competitor change to get the same result? Each answer is an alternative embodiment to describe.
• Capture failed experiments. They define the limits of range claims.
• Date and sign the capture record. It corroborates conception and supports the contribution map. Note: the inventor's side of this work is described in How to Prepare an Invention Disclosure for Your Patent Attorney and Preparing an Invention Disclosure: A Practical Checklist.

Phase 5: Drafting the specification and written description audit

• Organize as a nonprovisional: title, field, background, summary, brief description of drawings, detailed description, examples, definitions.
• Keep the background short and factual; avoid characterizing prior art or admitting that features are well known.
• Describe structure and operation, not just results. Claiming a result without the means fails written description, University of Rochester v. G.D. Searle & Co., 358 F.3d 916 (Fed. Cir. 2004).
• Describe alternatives for every element. Obvious variants are not "described," Lockwood v. American Airlines, Inc., 107 F.3d 1565 (Fed. Cir. 1997).
• Describe several species for any genus you may claim, and the common features that make them work. Possession must be shown in the document, Ariad Pharmaceuticals, Inc. v. Eli Lilly & Co., 598 F.3d 1336 (Fed. Cir. 2010).
• Give ranges with nested preferred values (broad, preferred, most preferred, and a specific example).
• Enable the full scope of what you will claim, with examples and guidance enough to avoid undue experimentation. Amgen Inc. v. Sanofi, 598 U.S. 594 (2023); In re Wands, 858 F.2d 731 (Fed. Cir. 1988).
• Describe the best mode. Required by 35 U.S.C. § 112(a), though excluded from the priority test in § 119(e)(1).
• For software and AI: architecture, data flows, specific processing steps, model structure, training data and preprocessing, and how outputs change a technical system.
• Remove narrowing language ("critical," "essential," "the invention is," "must") unless intended.
• Use consistent terminology and define coined terms.
• Integrate key attachment content into the body; remove unneeded confidential business data.
• Run the written description audit: for every feature the business may want to claim, cite the paragraph and figure that describes it. Anything without a citation is not supported. Note: a worksheet for this audit is in the toolkit.

Red flag: the provisional is a pitch deck. If the draft consists mainly of slides, a one-page summary, or marketing copy, it will almost certainly not support later claims. New Railhead lost its priority date over a single structural feature the provisional did not describe: New Railhead Manufacturing, L.L.C. v. Vermeer Manufacturing Co., 298 F.3d 1290 (Fed. Cir. 2002).

Phase 6: Figures and draft claims

• Draw every structural feature you may claim, from enough views to show relationships, with reference numerals. 35 U.S.C. § 113.
• Add flowcharts for each method and block diagrams for each system.
• Show alternatives in separate figures where practical.
• Explain every figure in the text. A figure without explanation is weak support.
• Prepare clean line drawings suitable for the nonprovisional and foreign filings (formal rules in 37 C.F.R. § 1.84).
• Write draft claims (optional under 35 U.S.C. § 111(b)(2) but recommended): broad independent apparatus, method, and system claims, plus dependents for each important feature and range.
• Check each claim term against the description. Revise the description wherever a term lacks support.

Phase 7: Entity status and fees

• Count employees, including affiliates, against the 500-employee small business limit, 37 C.F.R. § 1.27.
• Check for licenses, options, or obligations to convey rights to a large entity. Any one defeats small entity status.
• For micro status, check each inventor's and the applicant's gross income against the published limit (three times median household income), each inventor's count of prior nonprovisional filings (more than four disqualifies, with exclusions), and any conveyance to an entity over the limit, under 35 U.S.C. § 123 and 37 C.F.R. § 1.29.
• Prepare the micro entity certification if claiming micro status.
• Confirm the current provisional filing fee under 37 C.F.R. § 1.16(d) and the small entity (60 percent) reduction under 35 U.S.C. § 41(h)(1) and the micro entity (80 percent) reduction set by section 10(b) of the America Invents Act, as amended in 2022. Note: under the schedule effective January 19, 2025, the provisional fee is $325 undiscounted, $130 small entity, and $65 micro entity; check the current schedule before paying.
• Check the application size fee if the specification and drawings exceed 100 sheets.
• Diary a status re-check before each later fee payment; status is determined when each fee is paid, and errors must be corrected under 37 C.F.R. § 1.28(c).

Red flag: status asserted without checking. A large-company license signed during the provisional year, or an inventor with too many prior filings, makes the next fee payment wrong. Correct errors promptly; a false assertion not made in good faith carries a fine of at least three times the underpayment, 35 U.S.C. § 41(j).

Phase 8: Cover sheet data

Collect and verify before filing (required by 37 C.F.R. § 1.51(c)(1)):

• Statement that the application is a provisional application.
• Each inventor's full legal name, as it will appear on later filings.
• Each inventor's city and state or country of residence.
• Title of the invention.
• Applicant name (assignee or obligated assignee, if not the inventors), under 35 U.S.C. § 118.
• Practitioner name and registration number, and docket number, if represented. Representation of others requires registration under 37 C.F.R. part 11.
• Correspondence address and email.
• Government interest statement: whether the invention was made by or under a contract with a U.S. government agency, and if so, the agency and contract number.
• Entity status and any certification.
• Cross-check inventor names against the contribution map. At least one inventor must be common with the later nonprovisional under § 119(e)(1).

Phase 9: Filing and filing receipt

• Assemble final files: specification (PDF), drawings, cover sheet or application data sheet, any certification.
• Preserve an exact copy of what was filed, with a hash or locked PDF, in the matter file.
• File through Patent Center at least one business day before the deadline. Note: the Office dates electronic filings by Eastern time.
• Pay the fee (or note the surcharge if filing without it).
• Save the electronic acknowledgment receipt showing the application number and date.
• When the filing receipt arrives, check the filing date under 37 C.F.R. § 1.53(c), inventor names and residences, title, applicant, and entity status.
• Confirm the foreign filing license on the receipt. Without one, do not file abroad or send technical data abroad for filing within six months, 35 U.S.C. § 184; 37 C.F.R. part 5.
• Request corrections of any receipt errors promptly.

Red flag: foreign co-inventor or subsidiary wants to file locally first. For an invention made in the United States, a foreign filing without a license can bar the U.S. patent under 35 U.S.C. § 185. For an invention made abroad, the other country may have its own first-filing or security-clearance rule. Analyze both before anyone files anywhere.

Phase 10: The twelve months

• Docket: month 9 decision; month 11 target filing; month 12 deadline (next business day if a weekend or federal holiday, 35 U.S.C. § 21(b)); month 14 last restoration day; foreign twelve-month deadline separately.
• Mark "patent pending" on products and materials only while an application is pending, and set a reminder to remove it if the provisional lapses, 35 U.S.C. § 292. See Patent Marking Compliance: A Practical Checklist.
• Do not treat "patent pending" as enforceable. Only issued patents can be infringed, 35 U.S.C. § 271; provisionals never publish, so they never support § 154(d) provisional rights.
• Hold monthly invention check-ins and file a follow-up provisional for each improvement before it is disclosed.
• Run a patentability search by month seven. See Finding, Qualifying, and Using Prior Art: A Practical Guide.
• Decide foreign strategy (PCT, direct Paris filings, or U.S. only) by month nine. See International Patent Filing Checklist: A Practical Checklist.
• Decide whether to let any provisional lapse to preserve trade secret protection, and if so, make sure nothing filed later will publish it.
• Keep the disclosure policy in force until everything worth claiming is on file.

Phase 11: Conversion and inventor declaration prep

• Draft the nonprovisional under 35 U.S.C. § 111(a), carrying forward all provisional content and adding improvements.
• Prepare the application data sheet with a specific reference to each provisional by application number, within the time limit of 37 C.F.R. § 1.78 (later of four months from nonprovisional filing or sixteen months from provisional filing).
• Build a priority map: each claim, the provisional(s) and paragraphs and figures that support it, and which claims rely only on the nonprovisional.
• Check for intervening disclosures between each provisional and the nonprovisional that would be prior art to claims taking the later date.
• Prepare inventor declarations under 35 U.S.C. § 115 and 37 C.F.R. § 1.63: confirm each inventor's legal name and residence; send the final application to each inventor with the declaration; explain the duty of candor; collect signatures. Use a substitute statement under § 1.64 for an unavailable or refusing inventor.
• Re-verify inventorship against the final claims, and correct under 37 C.F.R. § 1.48 if needed.
• Prepare an information disclosure statement of known material art. The duty in 37 C.F.R. § 1.56 runs to everyone substantively involved; see Therasense, Inc. v. Becton, Dickinson & Co., 649 F.3d 1276 (Fed. Cir. 2011).
• Decide on a nonpublication request (only if there will be no foreign filing), under 35 U.S.C. § 122(b)(2)(B).
• File the PCT application or foreign applications claiming each provisional within twelve months, using 35 U.S.C. § 365 for the PCT route.
• File by month eleven. If month twelve passes, petition under 37 C.F.R. § 1.78(b) within fourteen months if the delay was unintentional.
• Record assignments for the nonprovisional.

Red flag: new matter in the nonprovisional that a competitor has already published. Claims that rely on content added after the provisional take the nonprovisional's date. If an intervening publication describes that content, those claims face it as prior art. Identify these claims in the priority map and assess them before filing.

Phase 12: Auditing someone else's provisional

For accused infringers, petitioners, and buyers in diligence.

• Obtain the provisional from the patent's file history.
• Chart each asserted claim limitation against the provisional's text and figures.
• Identify intervening art between the provisional and nonprovisional dates, including the patentee's own launches.
• Invoke the burden-shifting framework: once intervening art is shown, the patentee must come forward with evidence of entitlement, PowerOasis, Inc. v. T-Mobile USA, Inc., 522 F.3d 1299 (Fed. Cir. 2008).
• If relying on a reference's provisional date, chart the reference's own claims against its provisional, Dynamic Drinkware, LLC v. National Graphics, Inc., 800 F.3d 1375 (Fed. Cir. 2015); Note: the requirement applies to AIA references too: under § 102(d)(2), the reference's provisional must give written description support for at least one of the reference's claims, Dental Monitoring SAS v. Align Technology, Inc., No. 2025-1752 (Fed. Cir. Aug. 10, 2026) (rejecting the Board's contrary Penumbra approach).
• Check formalities: timely filing (or restoration), timely specific reference, common inventor.
• Check ownership of the provisional and nonprovisional. See IP Due Diligence Checklist for Mergers and Acquisitions: A Practical Checklist.

Deadlines table

Short worked example: Cobalt Mesa Instruments

Cobalt Mesa Instruments, a twelve-person company in Albuquerque, has a handheld spectrometer that identifies counterfeit pharmaceuticals through blister packs. Its CTO, Raúl Benavides, plans to present at a regulatory science conference in six weeks.

• Phase 2. The conference publishes abstracts three weeks before the meeting; the filing deadline moves to week two. A distributor in Mexico has asked for a quote; the sales lead is told not to send pricing until the provisional is on file, because a quote for an invention ready for patenting can be an offer for sale.
• Phase 3. The calibration algorithm was written by a graduate student intern from the state university. Her internship agreement says she "will assign." Counsel obtains a present assignment in week one and checks the university's policy, which claims inventions made with university resources. She used none.
• Phase 5. The first draft describes one light source. The written description audit finds that the product roadmap includes a second light source and a smartphone-attachment version, neither described. Both are added, with figures.
• Phase 7. Cobalt Mesa has a distribution agreement with a large company that includes an option to license the patents. Counsel concludes small entity status is unavailable while the option exists and pays the undiscounted fee.
• Phase 9. The filing receipt omits the foreign filing license. Cobalt Mesa wanted to file in Mexico and Brazil early. Counsel calendars the six-month date and does not authorize foreign filing before it, or before a license is granted.
• Phase 11. At month eleven, the nonprovisional and a PCT application are filed. The priority map shows two claims that rely on content added at month eight; a search finds no intervening publication describing that content.

Common failure points

1. The deadline was the talk, not the abstract. The abstract published first.
2. A quote went out. The on-sale bar does not require a completed sale.
3. A contractor or intern signed "will assign." Title never moved.
4. The draft described the prototype only. Later claims to the product line took the nonprovisional's date.
5. The figures did not show the claimed feature. The text alone was too vague.
6. Entity status ignored an option or license held by a large company.
7. No one read the filing receipt. The missing foreign filing license was discovered after a foreign filing.
8. Improvements were disclosed before a follow-up provisional. They became prior art abroad.
9. The benefit claim was left out of the application data sheet. The provisional's date required a petition.
10. "Patent pending" stayed on packaging after the provisional lapsed.

This document is general information, not legal advice for any particular situation. Deadlines, fees, and Patent Office forms change; confirm current requirements and consult a registered patent practitioner.

Related Documents

Related Articles

• Provisional Patent Applications: What They Protect, What They Do Not, and How to Keep the Priority Date: the doctrine and cases behind each item.
• Prior Art Under the America Invents Act: Section 102, the On-Sale Bar, Public Use, and the One-Year Grace Period: which disclosures count against you.
• Patent Ownership, Assignments, and Standing: Chain-of-Title Problems That Sink Cases: what goes wrong when Phase 3 is skipped.
• Trade Secrets and Generative AI: Reasonable Measures, Prompt Leakage, and Vendor Terms: disclosure risks in AI-assisted drafting.

Related Guides

• Preparing and Filing a Provisional Patent Application: A Practical Guide: the narrative version of this checklist.
• How to Prepare an Invention Disclosure for Your Patent Attorney: inventor preparation for Phase 4.
• Finding, Qualifying, and Using Prior Art: A Practical Guide: the month-seven search.
• Building a Generative AI Use Policy That Protects Trade Secrets: A Practical Guide: the AI rule in the pre-pitch policy.

Related Checklists

• Preparing an Invention Disclosure: A Practical Checklist: the inventor's materials list.
• International Patent Filing Checklist: A Practical Checklist: the foreign filing tasks at month twelve.
• Patent Marking Compliance: A Practical Checklist: accurate marking during and after the provisional year.
• Generative AI Trade Secret Protection Checklist: A Practical Checklist: controls for confidential invention material.

Related Toolkits

• Provisional Application Toolkit: Invention Capture Templates, Written Description Audits, and Conversion Calendars: forms for the capture, audit, cover sheet, and calendar items.
• Prior Art Toolkit: Search Protocols, Invalidity Charts, and On-Sale Bar Investigations: charts for Phase 12.
• Global Patent Portfolio Toolkit: Filing Calendars, National Phase Instructions, and Cost Models: foreign deadlines and budgets.
• Brand Ownership Toolkit: Assignment Agreements, Founder IP Clauses, and Ownership Evidence Files: founder IP clauses that also cover inventions.