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A Typo to Remember: Erroneous Patent Number in Terminal Disclaimer Destroys Exclusive Rights

Co-authored by Sam Cohen, Summer Associate 2024. On May 29, 2024, the Western District of Oklahoma in SIPCO, LLC v. JASCO Prods. Co. dismissed the plaintiff SIPCO’s patent infringement claims against defendant JASCO because...more

Doctrine of Assignor Estoppel to be Reviewed by U.S. Supreme Court

On January 8, 2021, the U.S. Supreme Court agreed to hear a case calling for it to abolish or limit the doctrine of assignor estoppel. See Minerva Surgical, Inc. v. Hologic, Inc., et al., No. 20-440, 2021 WL 77248 (U.S. Jan....more

Year in Review: The Most Popular IP Posts of 2020

As 2021 begins and intellectual property (IP) strategies are being developed for the new year, it is a good time to reflect on what IP issues were prominent in 2020. According to many readers, hot topics included Chinese...more

Effect of A Restriction Requirement on Prosecution History Estoppel

The decision whether to issue a Restriction Requirement during patent prosecution lies with the patent examiner, not the patent applicant. A Restriction Requirement can nevertheless trigger prosecution history estoppel that...more

Understanding Antedating of a Prior Art Reference for a Patent

The Federal Circuit’s decision in ATI Technologies ULC v. Iancu (April 11, 2019) highlights the proper standard to use in evaluating whether a claimed invention was reduced to practice before the effective date of a prior art...more

Understanding Priority Claims for U.S. Patent Applications: Part 2

This article is second in a two-part series focusing on various issues related to priority claims in U.S. patent applications. While Part 1 is a general overview of how to make a proper priority claim, this article addresses...more

Patent Specification Drafting Considerations Highlighted by TF3 Limited v. TRE Milano, LLC

Is there any possible danger in using the abbreviation “i.e.” in the specification of a U.S. patent application? The Federal Circuit’s recent decision in TF3 Limited v. TRE Milano, LLC shows that the answer is “yes.” The...more

Patent Exhaustion Defense Unavailable to Reseller after Impression Products

In an application of 2017 U.S. Supreme Court precedent in Impressions Products, Inc. v. Lexmark Intern., Inc., the Northern District California in International Fruit Genetics LLC v. Orcharddepot.com, No. 4:17-cv-02905-JSW,...more

Overcoming Obviousness Rejections: Arguing Changes to Fundamental Principle of Operation

When trying to overcome an obviousness rejection of a patent claim, an argument that two or more cited references cannot be combined may be used. For example, it can be argued that the combination is improper because the...more

Year in Review: The Most Popular Blog Posts of 2017

As 2018 begins and IP strategies are being developed for the new year, it is a good time to reflect on what IP issues were prominent in 2017. According to the many readers of Global IP Matters, hot topics included navigating...more

Recap of PTAB’s “Chat with the Chief”

On December 19, 2017 the Patent Trial and Appeal Board (the “Board”) held a “Chat with the Chief” webinar in which Chief Judge David Ruschke presented very recent developments on a variety of topics related to practice before...more

Year in Review: The Most Popular Blog Posts of 2016

As 2017 begins and IP strategies are being developed for the new year, it is a good time to reflect on what IP issues were prominent in 2016. According to the many readers of Global IP Matters, hot topics included navigating...more

Kyle Bass’ First IPR Win At The PTAB

Since Kyle Bass founded Coalition for Affordable Drugs X LLC (CFAD) to challenge pharmaceutical patents, CFAD has filed numerous petitions with the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office...more

Analyzing Patent Claims Having Conditional Language – the PTAB Provides Clarity

The Patent Trial and Appeal Board (PTAB) recently designated Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016), as precedential. In this decision the Board clarified how to interpret method and system claims...more

The Federal Circuit Newly Recognizes Patent-Agent Privilege

On March 7, 2016, the Court of Appeals for the Federal Circuit recognized “a patent-agent privilege extending to communications with non-attorney patent agents when those agents are acting within the agent’s authorized...more

Pfizer v. Lee: A Patent Term Adjustment Double Standard?

In Pfizer v. Lee (No. 2015-1265, January 22, 2016), the Federal Circuit upheld the U.S. Patent and Trademark Office’s (USPTO) determination that the toll period for A-type patent term adjustment (PTA) delay stops upon the...more

Inphi v. Netlist: Alternative Features Satisfy the Patent Written Description Requirement for a Negative Claim Limitation

It can be tricky to evaluate written description support under 35 U.S.C. § 112 for negative claim limitations since the support may amount to the absence of a feature from an invention that is described positively with...more

Tips for Responding to New Grounds of Rejection in an Examiner’s Answer

Filing an appeal brief with the Patent Trial and Appeal Board (PTAB) can be an effective way to advance prosecution and secure allowable claims. After an appellant’s filing of a PTAB appeal brief, an examiner may respond with...more

Prepare for the Japanese Patent Opposition System Coming Soon

The Japanese Patent Act was revised on May 14, 2014 to provide for post-grant oppositions within one year of the rule change, i.e., by May 14, 2015 (the exact effective date has not yet been set). Under the new opposition...more

Think Twice When Writing About the “Invention” in a Patent Application

Two recent Federal Circuit decisions emphasize that characterizing the “present invention” by using that term in a U.S. patent application specification can limit the claims according to that characterization. See...more

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