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Welcome to the Intellectual Property Litigation Newsletter, our review of decisions and trends in the intellectual property arena. In this edition, we learn that duping the court can prove costly, excluding a witness may...more
In a recent decision, Acting Director Coke Morgan Stewart denied a Patent Owner’s request for discretionary denial in LifeVac, LLC v. DCSTAR, Inc., IPR2025-00454. Even though Petitioner had previously challenged the same...more
On June 25, 2025, Acting Director Coke Stewart released an informative decision vacating institution of inter partes review (“IPR”) based on two petitions that were primarily filed to present two different constructions....more
The USPTO must reject a patent application if the applicant’s claim covers what the prior art already disclosed, and patent applicants may respond to such rejections with arguments that what they claimed was different. ...more
On July 29, 2025, Judge Edgardo Ramos (S.D.N.Y.) granted plaintiff Kannuu Pty, Ltd. (“Kannuu”) leave to amend its complaint to allege infringement of two newly-issued patents, after the U.S. Patent and Trademark Office...more
Key Takeaway: When facing a patent infringement suit, accused infringers traditionally turned to inter partes review (IPR) as a faster, more cost-effective alternative to district court litigation. However, recent guidance...more
Imagine this. You were just served with a Complaint for patent infringement and learn that, some years ago, your competitor was granted a patent giving them a legal monopoly to exclude others, including you, from making,...more
On 25 July 2025, K&L Gates secured an important win for its client, Midas Green Technologies, LLC. Acting USPTO Director Coke Morgan Stewart granted Director review and denied institution of an inter partes review (IPR)...more
IGT v. Zynga Inc., No. 2023-2262 (Fed. Cir. (PTAB) July 22, 2025). Opinion by Taranto, joined by Prost and Reyna. IGT owns a patent related to secured virtual networks in gaming environments. After the patent application was...more
Obvious-type double patenting (ODP) has historically served as a tool to prevent patent owners from extending exclusivity beyond the statutory allowed patent term and to tie patent families together during sale. Historically,...more
Many industries rely on design patents to protect the look and feel of their products—especially when aesthetics drive customer interest, brand identity, or market differentiation. In Top Brand LLC v. Cozy Comfort Company...more
The Patent Trial and Appeal Board (PTAB) denied institution of an inter partes review (IPR) brought by Par-Kan Company, LLC against Unverferth Manufacturing Company regarding U.S. Patent No. 8,967,940 (“the ‘940 patent”). ...more
This Federal Circuit opinion analyzes lexicography in the context of claim construction. Alnylam Pharmaceuticals owns U.S. Patent Nos. 11,246,933 (parent) and 11,382,979 (child). These patents relate to biodegradable...more
Coke Morgan Stewart, the acting director of the United States Patent and Trademark Office (“USPTO”), exercised discretion under 35 U.S.C. § 314(a) to deny Tessell’s (“Petitioner’s”) petition in favor of Nutanix (“Patent...more
On the heels of the U.S. Patent and Trademark Office Acting Director’s recent decision to deny institution of iRhythm Technologies’ inter partes review petition, the PTO has now issued additional decisions clarifying the role...more
In a recent decision, the Patent Trial and Appeals Board (“PTAB”) exercised its discretion under 35 U.S.C. § 314(a) to deny institution of an inter partes review (“IPR”) after applying the Fintiv factors, despite Petitioner’s...more
Almost two decades ago the Supreme Court handed down what has turned out to be one of its most significant patent decisions of this century: eBay v. MercExchange. The eBay case has had the effect of precluding prevailing...more
In a recent patent case, the U.S. government urged a Texas federal court to give greater weight to the difficulty of calculating damages as a basis for finding irreparable harm. If embraced by courts, the move could give...more
A Delegated Rehearing Panel (“DRP”) recently modified the PTAB’s construction of the claim term “workload” and remanded, giving Mercedes-Benz USA, LLC (“Petitioner”) another opportunity to challenge a processor patent....more
In a bold and unusual move, the DOJ’s Antitrust Division and the USPTO have jointly filed a Statement of Interest in a patent case – not before the Supreme Court or Federal Circuit, but in a district court in East Texas. The...more
Sterne Kessler’s U.S. IP Update is a newsletter delivering the latest developments in U.S. intellectual property law, tailored for companies and legal counsel in Korea. Stay informed on key court decisions, policy changes,...more
Under a new U.S. Patent and Trademark Office ("USPTO") policy issued in March 2025, pre-institution inter partes review ("IPR") proceedings are now bifurcated, consisting of a first phase in which the director considers...more
When Acting USPTO Director Coke Morgan Stewart denied institution in Dabico v. AXA Power IPR2025-00408 Paper 21, much of the commentary focused on the result....more
On June 6, 2025, the Acting Director of the United States Patent and Trademark Office (“USPTO”), Coke Morgan Stewart, issued a decision denying institution of five inter partes review (“IPR”) petitions filed by iRhythm, Inc....more
Patent attorneys are well-versed in the function of the Information Disclosure Statement (IDS) during prosecution. We understand that listing prior art in an IDS satisfies the duty of candor, helps insulate patents from...more