直 Japanese PDF Font
  • Our Professionals
  • Our Work
  • Our Insights
  • Offices
  • Firm
  • Careers
Finnegan
  • Articles & Books
    • Ad Law Buzz Blog
    • At the PTAB Blog
    • European IP Blog
    • Federal Circuit IP Blog
    • INCONTESTABLE® Blog
    • Prosecution First Blog
  • Events & Webinars
  • IP Updates
  • Podcasts
    • AI + Finnegan
    • AI + Copyright
    • AI + Patent
    • AI + Privacy
    • AI + Trade Secrets
    • AI + Trademark
  • Unified Patent Court (UPC) Hub

Federal Circuit IP Blog

Federal Circuit Affirms PTAB’s Rejection of Reissue Patent for Online Advertising

May 21, 2025

Authored and Edited by Soniya D. Shah; Ryan V. McDonnell; Erik R. Puknys

In In re Kostic, No. 23-1437 (Fed. Cir. May 6, 2025), the Federal Circuit affirmed the PTAB’s finding that a reissue application for an online advertising patent improperly broadened the original claim.

The appellants filed a reissue application six years after the patent was granted. By statute, reissue applications filed more than two years after the grant of the original patent cannot broaden the scope of the original patent claims. In the reissue proceeding, the appellants attempted to fix what they perceived as an inconsistency between dependent claim 3 and the claim from which it depended by rewriting claim 3 as an independent claim and deleting a step from the original independent claim that allegedly created the inconsistency. But the PTAB found that omitting the original independent claim’s language from the reissue claim would improperly broaden the scope of dependent claim 3.

On appeal, the appellants argued that the proper inquiry regarding the scope of a reissue claim is not whether it is broader than the scope of the original claim but whether it is broader than the “intended scope” of the original claim. And, because they obviously intended to draft claims that were consistent with each other, they should be permitted to omit the inconsistent language. The Federal Circuit disagreed, determining that the relevant statute, 35 U.S.C. § 251(d), and precedent require “comparing the scope of a reissue claim to the actual scope of an original claim, rather than what the inventors subjectively intended to claim.” Applying this holding to the appellants’ reissue claim, the court affirmed the PTAB’s finding that the reissue claim is broader than the scope of any claim of the original patent.

Related Practices

Appeals, Issues, and Legal Strategy

Federal Circuit and Supreme Court Appeals

Patent Office Invalidation Proceedings

PTAB Invalidation Proceedings: IPR and PGR

Related Offices

Palo Alto, CA

Washington, DC

Contacts

Soniya D. Shah
Associate
Washington, DC
+1 202 408 4204
Email
Ryan V. McDonnell
Associate
Washington, DC
+1 202 408 4167
Email
Erik R. Puknys
Partner
Palo Alto, CA
+1 650 849 6644
Email

Copyright © Finnegan, Henderson, Farabow, Garrett & Dunner, LLP. 

DISCLAIMER: Although we wish to hear from you, information exchanged in this blog cannot and does not create an attorney-client relationship. Please do not post any information that you consider to be personal or confidential. If you wish for Finnegan, Henderson, Farabow, Garrett & Dunner, LLP to consider representing you, in order to establish an attorney-client relationship you must first enter a written representation agreement with Finnegan. Contact us for additional information. One of our lawyers will be happy to discuss the possibility of representation with you. Additional disclaimer information

Related Insights

Conference

Patent Litigation Europe 2027

January 18-20, 2027

Amsterdam

Panel Discussion

2026 Advanced Patent Law Institute

December 3-4, 2026

Stanford

Conference

2026 ANA Masters of Advertising Law Conference

November 2-4, 2026

Huntington Beach

Conference

Life Sciences Patent Network North America Fall 2026

November 2-3, 2026

San Francisco

Conference

4th Global Patent Litigation FORUM

October 29, 2026

Munich

Seminar

PTAB Bar Association Thought Leader Summit 2026

October 7, 2026

Alexandria

Lecture

Resolving Patent Suits Without Settlement Payments

September 3, 2026

Virtual

Articles

D. Mass. Patent Litigation Update: July 2026

August 27, 2026

Webinar

PTAB Developments and Their Impact on Parallel Litigation: Strategic Considerations

August 26, 2026

Webinar

Due to international data regulations, we’ve updated our privacy policy. Click here to read our privacy policy in full.

  • Privacy
  • Disclaimer
  • Legal Notices
  • Fraud Alert
  • EEO Statement
  • Cookies
  • Contact Us

© 2026 Finnegan, Henderson, Farabow, Garrett & Dunner, LLP