Supreme Court & Appellate Litigation
Paul Hastings’ Supreme Court & Appellate Litigation practice handles appeals that shape industries, establish precedent and determine the outcome of clients’ most consequential disputes. Our lawyers regularly appear before the U.S. Supreme Court, federal courts of appeals, state supreme courts and intermediate appellate courts nationwide. We represent leading companies, financial institutions, innovators, trade associations and other organizations in high-stakes matters involving constitutional and administrative law, intellectual property, securities and financial services, arbitration, employment, life sciences, regulatory challenges and complex commercial disputes.
- Firm to Watch – Appellate: Courts of appeals and Appellate: Supreme Courts (States and Federal)
Legal 500 US (2026)
Secured a significant Federal Circuit victory for a global technology company establishing an important rule governing when patent applications qualify as prior art in Patent Trial and Appeal Board proceedings. The team then successfully defended the victory through the Supreme Court certiorari process, preserving a precedent with broad implications for patent litigation and PTAB practice.
Obtained an emergency injunction from the Ninth Circuit for a national industry association blocking a state law imposing new taxes and regulatory requirements just hours before it was scheduled to take effect. The ruling prevented the collection of potentially tens of millions of dollars annually while a constitutional challenge to the law proceeds.