Tag Archives: Patent Term

Policy Considerations: The On-Sale Bar for Secret Processes

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by Dennis Crouch

In light of the Federal Circuit's recent decision in Celanese v. ITC, it's worth examining the policy implications of maintaining a strong on-sale bar that extends even to invalidate patents on secret processes when the resulting products have been commercialized. This rule is rooted in pre-AIA jurisprudence and is now affirmed under the AIA.

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Family Planning Patent Style: Allergan, Cellect, and the ODP Maze

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by Dennis Crouch

Most U.S. utility patents are (or will eventually be) part of a patent family with at least one other U.S. patent. The recent rise in focus on obviousness type double patenting (ODP) has been unnerving to some, especially with the Cellect decision from 2023 that seemed to greatly expand the risk of family members colliding based upon differing expiration dates due to Patent Term Adjustment (PTA).

The Federal Circuit's new ODP opinion in Allergan USA v. MSN Labs, 24-1061 (Fed. Cir. August 13, 2014), provides some major relief to patent portfolio holders, holding that "a first-filed, first-issued, later-expiring claim cannot be invalidated by a later-filed, later-issued, earlier-expiring reference claim having a common priority date." This ruling provides a measure of protection for first-filed patents that receive substantial PTA, shielding them from ODP challenges based on their own continuations sharing the same priority date.

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