5 Key Takeaways | Making Sense of §102 Public Use and On Sale Bars to Patentability
Monthly Minute | Commercialization of an Invention
Jiaxing Super Lighting Elec. Appliance Co. Ltd. v. CH Lighting Tech. Co., Ltd., No. 23-1715 (Fed. Cir. 2025) – On July 28, 2025, the Federal Circuit issued a decision affirming in part, reversing in part, vacating in part,...more
On August 19, 2025, the U.S. Court of Appeals for the Federal Circuit issued an opinion affirming the U.S. District Court for the Eastern District of Louisiana’s grant of summary judgment that claims of Wilco Marsh Buggies &...more
JIAXING SUPER LIGHTING ELECTRIC APPLIANCE, CO. v. CH LIGHTING TECHNOLOGY CO., LTD. - Before Dyk, Chen, and Hughes. Appeal from the United States District Court for the Western District of Texas. The Federal Circuit reversed...more
In a mixed ruling on evidentiary exclusions and damages methodology, the US Court of Appeals for the Federal Circuit affirmed in part, reversed in part, vacated in part, and remanded a district court’s decision that excluded...more
In Janssen Pharmaceuticals, Inc. v. Teva Pharmaceuticals USA, Inc., Appeal No. 25-1228, The Federal Circuit found that claims reciting a dosing regimen with unequal loading doses were not obvious and that a presumption of...more
In Jiaxing Super Lighting Elec. Appliance, Co. v. CH Lighting Tech. Co., Ltd, the Court of Appeals for the Federal Circuit reviewed the judgment in a patent infringement case involving three patents owned by Jiaxing Super...more
Kilpatrick’s Justin Krieger and Karam J. Saab recently presented at the “23rd Annual Rocky Mountain Intellectual Property & Technology Law Institute” in Westminster, Colorado. This two-day event brings together thought...more
On April 28, 2025, the U.S. Supreme Court declined to hear Celanese International Corp.’s challenge to a Federal Circuit decision which found the company’s patent on the process to create the artificial sweetener used in Coke...more
Attend ACI's 21st Annual Conference on Paragraph IV Disputes and join leaders from brand and generic pharmaceutical companies, renowned outside counsel, esteemed members of the judiciary, government, and academia to: -...more
The US Court of Appeals for the Federal Circuit found the patents at issue invalid based on the patent owner’s “quotation” letter to a third party, concluding it was a commercial offer for sale under pre-America Invents Act...more
DDR Holdings, LLC v. Priceline.com LLC, Appeal Nos. 2023-1176, -1177 (Fed. Cir. Dec. 9, 2024) In our Case of the Week, the Federal Circuit affirmed a stipulated non-infringement judgment from Delaware’s district court,...more
Celanese International Corporation, Celanese (Malta) Company 2 Limited, and Celanese Sales U.S. Ltd. (collectively, “Celanese”) filed a petition before the United States International Trade Commission (the “ITC”), alleging...more
The Federal Circuit recently affirmed an ITC holding that the AIA’s § 102 on-sale bar applies to the sale of a product made according to a secret process when that sale occurs more than one year before the patent’s effective...more
Precedential and Key Federal Circuit Opinions - SANHO CORP. v. KAIJET TECHNOLOGY INTERNATIONAL LIMITED, INC. [OPINION] (2023-1336, 7/31/24) (Dyk, Clevenger, Stoll) - Dyk, J. The Court affirmed the Board’s decision...more
The US Court of Appeals for the Federal Circuit affirmed the International Trade Commission’s (ITC) determination that the asserted process patents were invalid under the America Invents Act (AIA) because products made using...more
In Celanese Int’l Corp. v. ITC, the Federal Circuit addressed whether the America Invents Act (“AIA”) changed the on-sale bar such that the sale of a product made using a secret process would no longer invalidate later-sought...more
On August 12, 2024, the Federal Circuit published its decision in Celanese International Corp. et al. v. International Trade Commission. The Federal Circuit concluded that, under the America Invents Act (AIA), patent claims...more
You have invented a process for manufacturing a high-potency artificial sweetener. You are now faced with a critical business decision: how do you protect your intellectual property? You could keep your process a closely...more
On March 4, the Federal Circuit, heard oral arguments for Celanese Int’l. v ITC, 22-1827 (Fed. Cir. 2024), a case that may reshape the dynamics between trade secrets and patent rights....more
The America Invents Act ("AIA") bars a person from obtaining a patent when the “claimed invention” had been “on sale” more than one year before the filing date of the patent. 35 U.S.C. § 102(a)(1). Acesulfame potassium...more
As I described in the first two parts of this series, there are a number of ways in which the “on sale” bar can cost the unwitting inventor dearly. Hence, lastly, I would like to highlight some of the exceptions that can be...more
In part 1 of this series, I introduced the “on sale bar” and described how a commercial sale or offer for sale can negate patentability, according to the doctrine the Supreme Court established in Pfaff v. Wells Elecs., Inc....more
I. Minerva Surgical v. Hologic: Background - The United States Court of Appeals for the Federal Circuit issued a precedential opinion earlier this year in Minerva Surgical, Inc. v. Hologic, Inc. clarifying the “in public...more
Last week, in a non-precedential opinion for an appeal from a Patent and Trial Appeals Board (PTAB) decision (In re WinGen), the Federal Circuit addressed prior public use under pre-AIA 35 U.S.C. § 102(b). The issue was...more