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Third Party Observation in Patent Prosecution in China
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In October 2023, we reported on the district court decision in Sonos, Inc. v. Google LLC. The decision was notable for reviving the prosecution laches doctrine to render unenforceable a continuation patent filed 13 years...more
The Federal Circuit’s recent decision in Google LLC v. Sonos, Inc. (24-1097) offers a compelling look at the evolving doctrine of prosecution laches, the written description requirement, and the practical realities of patent...more
Global Health Solutions LLC v. Selner, Appeal No. 2023-2009 (Fed. Cir. Aug. 26, 2025) - In our Case of the Week, the Federal Circuit conducted its first review of a derivation proceeding under the America Invents Act that...more
FMC Corp. v. Sharda USA, LLC - Before Moore, Chen, and Barnett. Appeal from the Eastern District of Pennsylvania. The district court erred by construing a claim term based on disclosures made in a provisional application and...more
The US Court of Appeals for the Federal Circuit recently held that cancellation of a claim during prosecution may give rise to prosecution history estoppel, precluding the patentee from recapturing the surrendered subject...more
On July 18, 2025, the U.S. Court of Appeals for the Federal Circuit reversed a $106 million jury verdict in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, No. 2023-2153, finding that Colibri’s infringement claim under...more
In a July 18 precedential decision in Colibri Heart Valve LLC v. Medtronic CoreValve LLC, the U.S. Court of Appeals for the Federal Circuit overturned a $106 million jury verdict against Medtronic for infringement of a patent...more
In Maquet Cardiovascular LLC v. Abiomed Inc., 131 F.4th 1330 (Fed. Cir. 2025), the Federal Circuit addressed whether the prosecution history of one patent in a patent family can limit the scope of claims in a different patent...more
Innovators seeking patent protection for software inventions should be aware that all software inventions face patent-eligibility issues. Nevertheless, patent practitioners who are experienced in the art of software patent...more
While a Miranda warning isn’t given prior to starting substantive examination, perhaps it should be. In Azurity Pharmaceuticals, Inc. v. Alkem Laboratories, Ltd., a precedential decision issued on April 8, 2025, the Federal...more
Knowing what qualifies as prior art is a core requirement of patent practitioners—whether in life sciences, in the technology sectors or in post-grant proceedings. It is important to keep abreast of changes to the rules,...more
Last week a remarkably interesting Federal Circuit case was decided concerning whether an asserted reference was properly shown to qualify as prior art in the rejection of a pending patent application. The pending application...more
Takeaways - -Intra-patent claim inconsistencies are errors correctible via reissue. -Subtle legal distinctions in reissue may require PTAB appeals. Patent prosecution errors occur. One such error that occurs is...more
Personalized Media Communications, LLC v. Apple, Inc., Appeal No. 2021-2275 (Fed. Cir. Jan. 20, 2023) Our Case of the Week focuses on the doctrine of prosecution laches. Following a bench trial on the issue held shortly...more
In Hyatt, the U.S. Court of Appeals for the Federal Circuit addressed “for the first time the PTO’s assertion of a prosecution laches defense in a civil action brought by a patentee under 35 U.S.C. § 145 to obtain a patent.”...more
[co-author: Jamie Dohopolski] Last year, the continued global COVID-19 pandemic forced American courts to largely continue the procedures set in place in 2020. The U.S. Court of Appeals for the Federal Circuit was no...more
Addressing for the first time whether the US Patent & Trademark Office (PTO) can assert prosecution laches as a defense in a civil action brought under 35 U.S.C. §145, the US Court of Appeals for the Federal Circuit held that...more
The US Court of Appeals for the Federal Circuit found that targeted advertising is still an abstract idea and that a system providing targeted advertising must utilize something more than generic features and routine...more
It can be difficult to advance prosecution of a U.S. patent application efficiently and effectively after prosecution has been closed and an Advisory Action has been mailed. Various U.S. Patent and Trademark Office (USPTO)...more
BAXALTA INC. V. GENENTECH, INC. Before Moore, Plager, and Wallach. Appeal from the District of Delaware Summary: A district court erred by interpreting a specification’s description of an “antibody” as a definition,...more
It is difficult to think of a case that has had more influence on patent practice than KSR v. Teleflex (550 U.S. 398 (2007)). In KSR, the U.S. Supreme Court rejected the established practice that an invention could not be...more
The Federal Circuit held recently that the "all substantive rights" test, used heretofore to determine the identity of the "patentee" for purposes of satisfying 35 U.S.C. § 281, should be the standard for determining common...more
PATENT CASE OF THE WEEK - Communication Test Design, Inc. v. Contec, LLC, Appeal No. 2019-1672 (Fed. Cir. March 13, 2020) - This week’s Case of the Week explores two important procedural issues: a court’s discretion to...more
Amgen, Inc. v. Amneal Pharmas. LLC et al - Before Newman, Lourie, and Taranto. Appeal from the U.S. District Court for the District of Delaware. Summary: An examiner amendment may give rise to prosecution history...more
In a case explaining what comprises an “applicant delay” in the context of a patent term adjustment (PTA), the US Court of Appeals for the Federal Circuit sided with the US Patent and Trademark Office (PTO) ruling that the...more