2020-2026 reporting84 written articlesUpdated from the article feedFederal CircuitPTAB/IPR

Patents / Patent Litigation

Federal Circuit affirms claim construction sustaining Nuedexta generic injunction, vacates Rule 65(c) bond waiver

In a precedential opinion, the Federal Circuit affirmed the District of Delaware's reading of “dextromethorphan” and “quinidine” to include salt forms—sustaining a preliminary injunction against Hetero's generic Nuedexta—but vacated the district court's waiver of the Rule 65(c) bond and remanded.

Latest Articles

84 written source-linked stories

Patents / PTAB

PTAB inter partes review explained: how an IPR challenges patent validity

Inter partes review is an administrative trial before the Patent Trial and Appeal Board that lets a third party challenge issued patent claims on prior-art grounds. The statute defines who can file, what can be raised, and the threshold to institute.

By Clara Hsu-Bennett, Patent Litigation Editor / Jun 22, 2026 /

Policy / ITC

ITC Section 337 investigation explained: import bans for patent infringement

A Section 337 investigation at the U.S. International Trade Commission targets unfair acts in importation, most often patent infringement, and can end in an order excluding the accused goods from entry into the United States.

By Sana Whitcomb, Enforcement and Platforms Reporter / Jun 22, 2026 /

Patents / Patent Litigation

Induced vs contributory patent infringement: how indirect liability differs

Induced infringement under 35 U.S.C. § 271(b) reaches those who actively encourage others to infringe; contributory infringement under § 271(c) reaches those who supply a component with no substantial noninfringing use. Both require knowledge.

By Noah Feld, Legal Tech Analyst / Jun 22, 2026 /

Patents / Patent Litigation

Doctrine of equivalents explained: infringement beyond the literal claim

The doctrine of equivalents lets a patent owner prove infringement even when an accused product does not literally meet a claim limitation, so long as the difference is insubstantial. The Supreme Court ties the test to each individual claim element.

By Gideon Blake, Opinion and Analysis Editor / Jun 22, 2026 /

Patents / Claim Construction

Broadest reasonable interpretation: how the USPTO construes patent claims

During examination the USPTO gives pending claims their broadest reasonable interpretation in light of the specification. The standard, set out in MPEP 2111, differs from how courts read issued claims.

By Noah Feld, Legal Tech Analyst / Jun 22, 2026 /

Patent Litigation / Consumer Electronics

Federal Circuit reverses IPR estoppel against Valve, faulting thin search evidence and hindsight

A June 18 panel held that a classification search returning tens of thousands of references does not, by itself, prove a prior-art ground was discoverable, and that Ironburg's other search evidence was tainted by hindsight. Valve's barred invalidity defenses return to the district court.

By Clara Hsu-Bennett, Patent Litigation Editor / Jun 18, 2026 /

Policy / PTAB Policy

US Inventor challenge to PTAB rulemaking fails on standing

The Federal Circuit held that claimed future harms from IPR and PGR institution policy were too speculative to support Article III jurisdiction.

By Gideon Blake, Opinion and Analysis Editor / Oct 3, 2025 / 5 min read

Patents / Supreme Court

Minerva narrows assignor estoppel without abolishing it

The Supreme Court kept assignor estoppel alive but limited it to invalidity arguments inconsistent with the assignor's representations.

By Theo Kim, Deals and Licensing Reporter / Jun 29, 2021 / 5 min read