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United States Patent and Trademark Office › Ex Partes Reexamination › Patents

The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.... more +
The U.S. Patent and Trademark Office is an agency of the United States Department of Commerce that serves a fundamental role in the U.S. intellectual property system by issuing patents and registering trademarks.    less -
Baker Botts L.L.P.

Ex Parte Reexaminations Poised to Make a Quiet Comeback: Discretionary Denial Guidance for Inter Partes Reexamination May Increase...

Baker Botts L.L.P. on

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

Sterne, Kessler, Goldstein & Fox P.L.L.C.

What Should the USPTO Consider Changing for Implementing Post-Final Written Decision Estoppel in Ex Parte Reexamination Based on...

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

The estoppel provision of 35 U.S.C. § 315(e)(1) had largely prevented requesters from challenging claims of a patent via ex parte reexamination after an inter partes review (IPR) that resulted in a final written decision...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Rise of Obviousness Double Patenting SNQs and Rejections in Reexaminations Challenging Expired Patents

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

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

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Sterne Kessler’s Reissue, Reexamination, and Supplemental Examination Practice Tips – July 2025

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

In the mid-2000s, the U.S. Patent Office (USPTO) determined that reexaminations would be more consistent and legally correct if performed by a centralized set of experienced and specially trained Examiners. As a result, the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

The Evolution of “New” in the “Substantial New Question” Standard in Patent Reexamination

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

As the Patent Trial and Appeal Board and the Acting USPTO Director refocus challengers, and with them Patent Owners, towards reexamination from inter partes review proceedings, the need to understand the nuance of “new” in...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Sterne Kessler’s Reissue, Reexamination, and Supplemental Examination Practice Tips – June 2025

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

In the mid-2000s, the U.S. Patent Office (USPTO) determined that reexaminations would be more consistent and legally correct if performed by a centralized set of experienced and specially trained Examiners. As a result, the...more

Jones Day

PTAB Institutes IPR Despite Concurrent Ex Parte Reexamination

Jones Day on

In Thermaltake Technology Co., Ltd. et al v. Chien-Hao Chen et al, IPR2024-01230, Paper 12 (PTAB Feb. 19, 2025), the PTAB granted the institution of inter partes review (“IPR”) while an ex parte reexamination (“EPR”) on the...more

Fish & Richardson

EPRx 201: The Risks and Rewards of Ex Parte Reexamination

Fish & Richardson on

Ex parte reexamination (EPRx) comes with risks and rewards for both patent challengers and patent owners. Patent challengers enjoy a lower threshold for institution and avoid the estoppel risk of other post-grant proceedings...more

Fish & Richardson

EPRx 101: Getting to Know Ex Parte Reexamination

Fish & Richardson on

Ex parte reexamination (EPRx) is a powerful tool that allows any party — including the patent owner — to request that the United States Patent and Trademark Office (USPTO) reassess the validity of an issued patent based on...more

Volpe Koenig

[CLE Webinar] Correcting Patents: A Comprehensive Overview - March 6th, 1:00 pm - 2:00 pm EST

Volpe Koenig on

Join Volpe Koenig for a webinar focused on various methods available for correcting patents after they have already issued. This session will explore the key processes and best practices related to correcting patents,...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

New Information Disclosure Statement Fees Apply to Reexamination and Reissue

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

According to recent U.S. Patent and Trademark Office (Office) data, the Office receives a burdensome number (13%) of information disclosure statements (IDSs) having in excess of 50 total items of information. 89 Fed. Reg....more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Sterne Kessler’s Reissue, Reexamination, and Supplemental Examination Practice Tips – November/December 2024

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

In the mid-2000s, the U.S. Patent Office (USPTO) determined that reexaminations would be more consistent and legally correct if performed by a centralized set of experienced and specially trained Examiners. As a result, the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

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

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

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

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit Upholds USPTO Authority to Estop Patentees from Obtaining Patent Claims 'Not Patentably Distinct' from Previously...

Akin Gump Strauss Hauer & Feld LLP on

The Federal Circuit recently upheld the USPTO’s authority under the estoppel provision 37 C.F.R. § 42.73(d)(3)(i) to prohibit a patent owner from obtaining patent claims that are not patentably distinct from claims previously...more

Baker Botts L.L.P.

Intellectual Property Report - October 2024

Baker Botts L.L.P. on

In 2023, global investments in energy transition projects surged to approximately $1.7 trillion. This unprecedented investment level underscores the transformative shift toward cleaner energy sources and technologies....more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

The Dilemma with Patent Owner Statements Post-Reexamination Order

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

Takeaways: 1. Patent owner statements present both risks and limited opportunities. 2. Waiving the patent owner statement shortens overall reexamination proceeding pendency. Every third party requester ex parte...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Demonstrating Unequivocal Intent to Broaden in Reissue

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

Takeaways: - Patentees must demonstrate “unequivocal intent” to broaden claims in a broadening reissue. - To establish a broadening reissue, a patentee’s actions must align with their words within the two year statutory...more

Knobbe Martens

Estoppel Does Not Apply to Previously Issued Claims

Knobbe Martens on

Before Bryson, Lourie, and Reyna. Appeal from the United States Patent and Trademark Office (“PTO”), Patent Trial and Appeal Board (“Board”). Summary: Estoppel under 37 C.F.R. § 42.73(d)(3)(i) only applies to obtaining new...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Sterne Kessler’s Reissue, Reexamination, and Supplemental Examination Practice Tips – June 2024

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

In the mid-2000s, the U.S. Patent Office (USPTO) determined that reexaminations would be more consistent and legally correct if performed by a centralized set of experienced and specially trained Examiners. As a result, the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Sterne Kessler’s Reissue, Reexamination, and Supplemental Examination Practice Tips – May 2024

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

In the mid-2000s, the U.S. Patent Office (USPTO) determined that reexaminations would be more consistent and legally correct if performed by a centralized set of experienced and specially trained Examiners. As a result, the...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Requester Side Benchmarks for Successful Reexamination Requests

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

Takeaways: -A requester can have a voice in ex parte reexamination prosecution. - Requesters should strategically structure their request documents to hedge against potential patent owner amendment and argument. The...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Strategies for Successful Patent Owner Reexamination Requests

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

Takeaways: - Patent owner requested reexaminations are not an admission of claim unpatentability. - Patent owners can and should control the reexamination request narrative. Patent owners must consider the pros and...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Fixing Unintentional Duty of Disclosure and Candor Issues Through Supplemental Examination

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

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

Sterne, Kessler, Goldstein & Fox P.L.L.C.

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

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

Sterne, Kessler, Goldstein & Fox P.L.L.C.

2023 PTAB Year in Review: Editors’ Introduction

Sterne, Kessler, Goldstein & Fox P.L.L.C. on

A review of 2023 reveals it was an active and impactful year in shaping the policy and practice before the Patent Trial and Appeal Board (PTAB or Board) at the U.S. Patent and Trademark Office (USPTO). In fact, all three...more

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