An already-expired patent is worth nothing, including provisionally

How to read the ledger below. Each numbered point carries the kind of evidence behind it. ESTABLISHED is stated in the authority's own text, with a locator. IMPLEMENTED is the rule as the authority actually applied it. OBSERVED is carried by a source outside this one. ASSUMED is the drafter's inference, flagged as such and not the authority speaking. Quotations are checked against a cached copy of the primary source by script.

In one paragraph

The Federal Circuit held in In re Forest on 3 April 2025 that the provisional rights in Section 154 of the Patent Act arise only where a patent would issue with exclusionary rights, so an application whose patent would issue after the 20 year term had already run yields no rights at all. Because any patent issuing from the application would be expired, the court resolved the appeal without reaching the merits of the Board decision below.

Reader summary

Forest's application, if allowed, would have issued as a patent that was already expired, because the twenty-year term measured from the priority date had run. The Board's decision against him was on the merits, but the court never reached it.

Forest's answer to the obvious problem was provisional rights. Section 154(d) gives a patentee a reasonable royalty for the interval between publication of the application and issuance of the patent, and he argued those rights would still attach even to a patent issuing without any remaining term.

The court rejected that reading. Provisional rights are provisional in a specific sense: they run until the patent issues and are then replaced by the statutory exclusionary rights. They do not materialize until a patent issues, and they are granted only where the patent would issue with exclusionary rights to replace them. A patent with no term has nothing for them to convert into.

The consequence was jurisdictional. With no rights available from any patent that could issue, the appeal could be resolved without reaching the Board's decision at all.

Why this matters when you are drafting

Term is inherited, and it is absolute. Claim 5. A continuation's twenty years run from the priority date it claims, not from its own filing. A branch filed late in a family's life has correspondingly little term, and past the endpoint it has none.

There is no partial value at the end. Claim 1 forecloses the natural fallback. An application prosecuted past term does not yield a weak patent or a royalty-only patent; it yields nothing, because provisional rights require exclusionary rights to convert into.

This is the arithmetic that should gate a late continuation decision. Read with in-re-cellect on how adjustment interacts with the family ceiling, and with the continuing application fees in this tier, the question at filing time is what term will actually remain at issuance, and whether the branch can plausibly issue before it.

Do not mistake the jurisdictional holding for a merits ruling. Claim 7. The Board's decision against Forest was never reviewed. Nothing here says the claims were unpatentable.

What the authority establishes

1. [ESTABLISHED, the question and the holding stated together] "under 35 U.S.C. § 154, does a patent include the grant of provisional rights when the patent would issue after its expiration date (and thus would issue without any exclusionary rights)? For the following reasons, we hold that provisional rights are granted only when a patent would issue with exclusionary rights". (P. 5.)

1. [ESTABLISHED, what provisional rights are] "These provisional rights run from when the application is published until the patent issues." (P. 3.) They are a pre-issuance royalty, not an exclusionary right.

1. [ESTABLISHED, why they cannot stand alone] "Provisional rights are thus less robust than section 154(a) exclusionary rights, and they are 'provisional' in the sense that the rights end and are replaced by the statutory exclusionary rights once a patent issues." (P. 3.) The replacement is the mechanism the holding turns on.

1. [ESTABLISHED, and this is the sentence that decides it] "Importantly, provisional rights do not materialize until the Patent Office issues a patent." (P. 3.)

1. [ESTABLISHED, the term rule in the background] "These exclusionary rights begin when the patent issues and end twenty years after the application date or applicable priority date." (P. 2.) A continuation inherits that endpoint from its priority claim.

1. [ESTABLISHED, the worked example the opinion gives] On its illustration, a patentee "would be awarded provisional rights under section 154(d) effective from July 1, 2001, to January 1, 2005, and would be awarded exclusionary rights under section 154(a) from January 1, 2005, through January 1, 2020". (P. 3.) The two periods abut; they do not overlap and neither exists without the other.

1. [ESTABLISHED, the jurisdictional consequence] The court could resolve "Forest's appeal without needing to address the merits of the Board's decision because any patent that would issue from the '116 application would be expired". (P. 4.) The merits were never reached.

1. [ESTABLISHED, the concession that made it clean] Forest "does not contest the jurisdictional consequence if his understanding of section 154 is incorrect". (P. 2.) The case therefore turns entirely on the statutory reading.

1. [ASSUMED, drafter's inference, flagged as such] This closes a route a practitioner might otherwise consider: keeping a late continuation alive for its published-application royalty value alone. The opinion does not frame it as a strategy question; it follows from claims 1 and 4 read against the reason anyone would prosecute past term.

Quotations, verified against the source

All from the Federal Circuit's opinion. Page locators computed from the docket stamp.

• "does not contest the jurisdictional consequence if his understanding of section 154 is incorrect" (P. 2.)
• "These exclusionary rights begin when the patent issues and end twenty years after the application date or applicable priority date." (P. 2.)
• "These provisional rights run from when the application is published until the patent issues." (P. 3.)
• "Importantly, provisional rights do not materialize until the Patent Office issues a patent." (P. 3.)
• "Provisional rights are thus less robust than section 154(a) exclusionary rights, and they are 'provisional' in the sense that the rights end and are replaced by the statutory exclusionary rights once a patent issues." (P. 3.)
• "would be awarded provisional rights under section 154(d) effective from July 1, 2001, to January 1, 2005, and would be awarded exclusionary rights under section 154(a) from January 1, 2005, through January 1, 2020" (P. 3.)
• "without needing to address the merits of the Board's decision because any patent that would issue from the '116 application would be expired" (P. 4.)
• "we hold that provisional rights are granted only when a patent would issue with exclusionary rights" (P. 5.)

Tensions and open questions

The holding is stated for a patent issuing wholly after expiration. Claim 1 addresses that case. A patent issuing with a very short remaining term is not addressed, and nothing here says where between "some term" and "no term" the analysis would change, because it does not have to.

Past provisional-rights exposure is not discussed. Claims 2 and 6 describe the interval between publication and issuance. Whether a royalty could ever be recovered for that interval by some other route, once no patent can issue, is outside what the passages read address.

The concession in claim 8 removes an argument that another applicant might press. Because Forest did not contest the jurisdictional consequence, the opinion does not test whether an expired-patent appeal could survive on some other basis.

What this record does and does not cover

The section 154 analysis and the jurisdictional consequence were read end to end, including the worked example.

What was NOT read closely, and is therefore outside what this record can support: the Board's underlying decision and the patentability of the claims, which the court expressly did not reach, and the prosecution history of the application. This record says nothing about whether Forest's claims were allowable.

Currency

This record was verified against its primary source on 2026-08-15. That is a fidelity check: the quotations, locators and attribution are accurate to that source. Whether the authority has since been narrowed, distinguished, abrogated or reversed has not been checked here. Confirm it still stands before relying on it.