Tag Archives: obviousness-type double patenting

Omitted Elements and Written Description: Federal Circuit’s Split Decision in Allergan v. Sun Pharma

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by Dennis Crouch

I previously wrote about Allergan USA, Inc. v. MSN Laboratories Private Ltd. (Sun Pharma), No. 24-1061 (Fed. Cir. Aug. 13, 2024), focusing on Federal Circuit's about-face on obviousness-type double patenting.  My original post skipped over an important aspect of the opinion: the court's 2-1 decision favoring the patentee on the written description requirement of 35 U.S.C. § 112(a).  This portion of the case focuses once again on when an element is "essential" to the invention and therefore required in the claims.

Four key takeaways:

  1. We presume that no element is "essential."
  2. Courts should look for indications in the patent documents that the feature is critical, essential, etc.
  3. The court here relied upon broad claims in the priority filing that were later deleted in order to show the inventor possessed embodiments that did not require the element.
  4. The key focus for written description is comparing the specification with the claims.  Although expert testimony may be relevant, it must be directly tied to the intrinsic record.

All of these elements point to the idea that it is the job of the patent drafter and prosecutor to ensure the written description is sufficient, and to avoid pitfalls that might indicate otherwise.

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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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The NYIPLA Brief: Advocating for Patent Term Adjustments

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by Dennis Crouch

The Federal Circuit's 2023 decision in In re Cellect, LLC, 81 F.4th 1216 (Fed. Cir. 2023) has set the stage for a potentially significant Supreme Court case on the interplay between the Patent Term Adjustment (PTA) statute, 35 U.S.C. § 154(b), and the judicially-created doctrine of obviousness-type double patenting (ODP). Cellect is now seeking certiorari, and the New York Intellectual Property Law Association (NYIPLA) has stepped in with an amicus brief supporting the petition, arguing that the case presents "questions of exceptional importance." Brief for New York Intellectual Property Law Association as Amicus Curiae Supporting Petitioner at 23, Cellect, LLC v. Vidal, No. 23-1231 (U.S. May 28, 2024).

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Cellect or Reject? SCOTUS Asked to Consider Fate of ODP Doctrine

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by Dennis Crouch

In its new petition for certiorari in Cellect LLC v. Vidal, No. __ (U.S. May 20, 2024), Cellect argues that the Federal Circuit erred in upholding the PTAB's (PTAB) invalidation of Cellect's four patents based on the judicially-created doctrine of obviousness-type double patenting (ODP). The key issue is whether ODP can cut short the patent term extension provided by the Patent Term Adjustment (PTA) statute, 35 U.S.C. § 154(b). Meanwhile, Dir. Vidal is looking to extend the power of ODP via rulemaking. This is an important case coming at an important time. 

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Patent Term Adjustment and Obviousness-Type Double Patenting: Cellect’s Bid for Supreme Court Review

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by Dennis Crouch

The Federal Circuit's August 2023 decision in In re Cellect, LLC has set-up a significant question regarding the interplay between the patent term adjustment (PTA) statute, 35 U.S.C. § 154(b), and the judicially-created doctrine of obviousness-type double patenting (OTDP). Now, Cellect is seeking Supreme Court review, recently filing a petition for an extension of time that also indicated its intent to file. Cellect's petition is now due May 20, 2024, and I expect significant support from the patent owner community.

Patentees often receive PTA due to USPTO delays that otherwise eat into the 20-year patent term.  A fundamental issue in Cellect boils down to whether a patentee must forfeit their PTA term extensions to avoid an OTDP invalidity finding.  This comes up in situations where a patentee has two patents that cover only slightly different inventions.  Most often this is seen in family-member continuation applications, but it can also arise when applicants file several applications all within a short period.

Under the judge-made law of OTDP

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