News & Analysis as of July 14, 2025

Patent Litigation

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The Leahy-Smith America Invents Act is a United States federal statute enacted in 2011 aimed at simplifying the U.S. patent system and allowing inventions to be brough to market sooner. The AIA makes significant changes to the patent system, including changing from a first-to-invent scheme to a first-to-file scheme, eliminating interference proceedings and developing post-grant opposition. less -

PTAB Year in Review – Caveat Experimenter: Using Experimental Data in PTAB Proceedings Comes With Risks

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 3/7/2025

Parties involved in Patent Trial and Appeal Board (PTAB) proceedings sometimes contemplate submitting experimental data to support their positions. Although such data can be useful, there also are risks. Several recent cases...more

2024 PTAB Year in Review: Analysis & Trends

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 2/4/2025

The Patent Trial and Appeal Board (PTAB) continues to play a pivotal role in shaping the intellectual property landscape. In 2024, several developments affecting PTAB practice emerged, from new rulemaking at the USPTO to key...more

Neck or Nothing? “Quotation” Invalidates On-Sale Bar

McDermott Will & Emery on 12/19/2024

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

Historical Development of Substantial New Question contrasted with the new Section 325(d) Criteria

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 11/7/2024

Ex parte reexamination proceedings have been available for over 40 years. The reexamination statutes, Public Law 96-517 of July 1, 1981 (also known as the Bayh-Dole Act), included 35 U.S.C. § 303, which codified, in part,...more

Eye on IPRs, October 2024: USPTO Issues Final PTAB Procedure Rules

Erise IP on 11/5/2024

Every month, Erise’s patent attorneys review the latest inter partes review cases and news to bring you the stories that you should know about: USPTO Issues Final Rules on PTAB Procedure - The U.S. Patent and...more

Celanese v. ITC: How the On-Sale Bar Can Turn Sweet Sales into Spoiled Patents

Sheppard Mullin Richter & Hampton LLP on 9/17/2024

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

Federal Circuit Holds That America Invents Act Does Not Affect On-Sale Bar To Patentability

A&O Shearman on 8/20/2024

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

IP Hot Topic: USPTO Publishes Long-awaited Notice of Proposed Rulemaking with Updates to PTAB Practice and Procedure

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 4/24/2024

On April 19, 2024, the USPTO published a long-awaited Notice of Proposed Rulemaking (NPRM) that followed its April 2023 Advance Notice of Proposed Rulemaking (ANPRM). The proposed rules package, Patent Trial and Appeal Board...more

Fixing Unintentional Duty of Disclosure and Candor Issues Through Supplemental Examination

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 4/19/2024

A significant procedure for patent owners, Supplemental Examination, was established in the 2012 America Invents Act when Congress determined there should be a proceeding to turn events that in the past could lead to...more

PTAB Spotlight Series with Jason Eisenberg

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 2/28/2024

In our PTAB Spotlight Series, attorneys will share their valuable insights on PTAB practice today, the challenges and opportunities clients face, and the trends practitioners should follow. Jason D. Eisenberg is a director...more

2023 PTAB Year in Review: Analysis & Trends: 2023 PTAB Case Highlights

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 2/21/2024

Precedential Decisions - Penumbra, Inc. v. RapidPulse, Inc., IPR2021-01466, Paper 34 (March 10, 2023) (designated: November 15, 2023) (regarding prior art status under AIA § 102) The Director designated as precedential...more

2023 PTAB Year in Review: Analysis & Trends: Reexamination Statistics and the Federal Circuit’s SNQ Clarification/Expansion

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 2/19/2024

The recent resurgence in ex parte reexamination demonstrates the importance of this post-grant review vehicle. It has become particularly important for patent challengers who may be estopped from requesting inter partes...more

Penumbra Illuminates Priority Dates Pre and Post-AIA

Jones Day on 12/28/2023

USPTO Director Kathi Vidal recently designated precedential section II.E.3 of Penumbra, Inc. v. RapidPulse, Inc. and clarified that the priority analysis for an AIA reference patent as prior art is different than for a...more

USPTO Doubles Down on Inapplicability of Dynamic Drinkware to AIA Cases in Precedential PTAB Decision

Fenwick & West LLP on 11/21/2023

What You Need to Know The USPTO has reiterated its position that Dynamic Drinkware, LLC v. National Graphics, Inc. does not apply to patents and patent applications that fall under the America Invents Act (AIA) by designating...more

Sins of the Fathers? Grandparent IPR Factors into Current Institution Decision

McDermott Will & Emery on 9/7/2023

US Patent & Trademark Office (PTO) Director Kathi Vidal vacated and remanded a Patent Trial & Appeal Board decision denying institution of an inter partes review (IPR) because the Board improperly applied the precedential...more

What Patent Bills Would Mean for Infringement Litigation

Farella Braun + Martel LLP on 9/7/2023

Two bills recently introduced in Congress could significantly affect the current patent litigation landscape. The bipartisan bills are titled the Patent Eligibility Restoration Act of 2023 and the Promoting and Respecting...more

IPR>>IRL - A brief guide to the essentials of inter partes reviews in real life. Post-Grant Patent Law Practice

Perkins Coie on 4/28/2021

In 2011, Congress passed the America Invents Act, which replaced the inter partes reexamination process with inter partes review (IPR). The IPR procedure was intended to streamline disputes by, among other things, shortening...more

The Interplay of Patents and Trade Secrets in Protecting IP

Orrick - Trade Secrets Group on 8/25/2020

Often companies are faced with a dilemma in protecting their IP—should the company disclose its IP to the world and seek a patent that will protect its IP for a set number of years? Or, should the company keep the IP a secret...more

PTAB Strategies and Insights - October 2019: Graphical Snapshot of Supplemental Examination

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 11/5/2019

Supplemental Examination was born out of fixing potential inequitable conduct issues before they are raised in a court proceeding. 35 U.S.C. § 257(a); 27 CFR § 1.601; M.P.E.P. § 2800. The stated goal is to improve patent...more

Intellectual Property Law Year in Review - March 2019

McDermott Will & Emery on 3/20/2019

In the continuously evolving world of intellectual property law, 2018 was another milestone year. The US Supreme Court and Federal Circuit continued to define key aspects of intellectual property (IP) law including: •...more

PTAB Strategies and Insights - December 2018: Federal Circuit Holds No Assignor Estoppel in AIA Proceedings

Sterne, Kessler, Goldstein & Fox P.L.L.C. on 1/2/2019

Recently, the Federal Circuit held that an ex-employee (of Cisco) who founded a competitor (Arista) can challenge their own assigned patent, finding that, after assignment, they are not the patent owner. The Court held that...more

Patent System after Oil States and SAS – What’s the future?

Foley & Lardner LLP on 5/7/2018

On April 24th, the Supreme Court decided two important cases related to the United States Patent & Trademark Office’s inter partes review (IPR) proceedings for reconsidering the prior grant of a patent – Oil States Energy...more

[Webinar] Supreme Court Issues Decisions in Oil States and SAS Cases: A Discussion of the Impact on Patent Law and Inter Partes...

BakerHostetler on 5/1/2018

This timely and fast-moving webinar provides insight for business leaders and legal counsel on the recently issued Supreme Court decisions in Oil States Energy Services, LLC v. Greene’s Energy Group, LLC and SAS Institute...more

Stayin' alive: What’s next for IPRs after Oil States and SAS

Eversheds Sutherland (US) LLP on 4/30/2018

On April 24, 2018, the US Supreme Court decided two important cases that directly impact inter partes reviews (IPRs) before the Patent Trial and Appeal Board (PTAB), and patent litigation as a whole. In Oil States Energy...more

SCOTUS Upholds IPRs as Constitutional, May Leave Opening for Challenges to Certain IPRs

Fenwick & West LLP on 4/27/2018

Is inter partes review of a patent grant compatible with Article III and the Seventh Amendment? That was the question presented in Oil States Energy Services v. Greene’s Energy Group, and the U.S. Supreme Court this week...more

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