USPTO Withdraws Terminal Disclaimer Reform and Resets ODP Strategy

One of the most common ways this USPTO story is now described is also one of the least accurate. The Office did propose a major change in May 2024 that would have tied obviousness-type double patenting (ODP) and terminal disclaimer practice much more tightly together. Under that proposal, a patent linked through a terminal disclaimer could have faced serious enforceability consequences if a related patent in the chain ended up with a claim finally held unpatentable or invalid over prior art. But that proposal never became an effective final rule.

The date that matters is December 4, 2024. On that day, the USPTO formally withdrew the proposed rule. That means the issue should no longer be framed as a new rule that is already in force. Even so, the story is still worth close attention. The withdrawal restored the older legal framework, but it did not erase the policy concern behind the proposal. ODP, continuation-heavy filing strategies and terminal-disclaimer-linked portfolio design are all still very much alive as practical pressure points.

First, the legal status needs to be stated plainly

The most important correction here is factual, not interpretive. What the USPTO published on May 10, 2024 was a notice of proposed rulemaking, not a final rule. The proposal would have gone well beyond the familiar effects of a terminal disclaimer. Instead of only cutting off extra term and preserving common ownership, it would also have required applicants to accept a stronger enforceability condition. In practical terms, patents linked through terminal disclaimers would have become more vulnerable to standing and falling together when prior-art invalidity or unpatentability findings landed elsewhere in the chain.

That did not become the law. After receiving extensive feedback, the USPTO withdrew the proposal on December 4, 2024. The later FY 2025 patent fee rule also stopped short of adopting the more controversial staged fee approach that had been floated for terminal disclaimers. The practical result is straightforward. There is no current USPTO rule in force that turns the proposed family-wide enforceability consequence into an operative requirement for terminal disclaimers used to overcome ODP. Anyone writing about this issue today should start there.

Withdrawal does not mean the underlying concern has disappeared

The proposal was not drafted in a vacuum. It was aimed at a problem the Office has been discussing for some time: clusters of highly similar patents, often built through continuation practice, that can be expensive to challenge one by one even when they revolve around patentably indistinct claim sets. The proposed reform tried to push the consequence of terminal disclaimer practice beyond term and ownership, and into enforceability. That was the controversial step. Its withdrawal removes that step, but not the policy concern that motivated it.

This matters because some applicants may read the withdrawal too comfortably. The better reading is narrower. The USPTO stepped back from one aggressive regulatory solution, not from the broader concern about serially layered rights, challenge costs and patent-thicket behaviour. That means filing strategy should not snap back to an old assumption that terminal disclaimers are frictionless cleanup tools with little downstream consequence. The proposal failed, but it also exposed how the Office and the wider policy debate are now looking at continuation-heavy portfolios.

For prosecution, the real lesson is to stop treating terminal disclaimers as a default move

In many cases, an ODP rejection has long invited a familiar calculation: if argument is weak and amendment is unattractive, file the terminal disclaimer and move on. Even after the withdrawal, that reflex deserves more scrutiny. A terminal disclaimer has never been cost-free. It affects term, common ownership, transaction flexibility, licensing architecture and the narrative surrounding a patent family in later disputes. The abandoned reform simply forced that reality into sharper view.

That is especially important for continuation strategy. Some portfolios have been built on a habit of filing broadly, prosecuting in layers and using terminal disclaimers later as a practical way to settle overlap. Even without the withdrawn rule, that habit is worth re-pricing. The better question is no longer only whether a terminal disclaimer can get a case allowed. It is whether the new application genuinely adds a claim position worth maintaining as a separate asset once term, ownership restrictions, maintenance burden and future dispute posture are all accounted for. Where the answer is thin, the filing may be weaker than it looks on paper.

The more valuable response is portfolio mapping, not just case-by-case reaction

The deeper lesson from this episode is not simply that one proposal died. It is that many companies still do not have a clean picture of how their own assets are linked. They may know they have multiple continuation families and repeated ODP issues, yet still lack a working map of which patents are tied by terminal disclaimers, which reference patents sit at the centre of those chains and which families could become commercially awkward if one strategically important patent runs into validity trouble. The withdrawal does not remove those structural issues. It just means the USPTO will not, for now, amplify them through this specific rule.

That is why the next move should be taken at portfolio level. Existing terminal disclaimers, reference patents, common-ownership constraints, licensing arrangements and key continuation pathways should be reviewed as one system rather than as isolated prosecution events. New filings should be screened earlier for whether they are truly patentably distinct or are likely to survive only by being tied back into an already crowded chain. The USPTO withdrew the sharpest part of the proposal, but the market signal remains. Terminal disclaimers are still available. They just look less and less like a painless administrative shortcut.