Patent litigation attorney

Brian D. Ledahl

104 tracked appearances — 99 plaintiff · 5 defendant.

Specialty & background

Brian D. Ledahl is a partner at Russ August & Kabat, where his practice centers on intellectual property litigation with a focus on high-technology patent cases. His work encompasses a variety of complex technologies, as seen in the provided case list which includes disputes over digital advertising technology and data encryption. The tracked cases show Mr. Ledahl exclusively representing plaintiffs, indicating a practice focused on patent assertion for entities such as Intent IQ, LLC and TQP Development, LLC. His broader experience includes representing clients in matters involving data compression and targeted advertising technologies.

Mr. Ledahl has built his career at prominent law firms, having been a partner at Russ August & Kabat since July 2013. Prior to that, he was an attorney at Irell & Manella LLP from 1996 to 2013, where he was a member of the firm's intellectual property and litigation groups. He has litigated cases in numerous federal district courts and has significant appellate experience, having argued before the U.S. Court of Appeals for the Federal Circuit. His firm biography notes that he has helped clients recover over $1.5 billion in judgments and settlements over his career.

Based on available public records, Mr. Ledahl has appeared in post-grant proceedings before the Patent Trial and Appeal Board (PTAB). For example, he was listed on filings for patent owner Future Link Systems, LLC in an inter partes review (IPR) that ultimately settled and was terminated. His notable district court representations include serving as lead counsel for TQP Development against Avis Budget Group and for Intent IQ against MNTN, Inc. He also successfully argued a Federal Circuit appeal for HBAC Matchmaker Media against Google and others, which resulted in a reversal of an unfavorable claim construction ruling.

Mr. Ledahl earned his J.D. from Columbia Law School in 1996, where he was a Harlan Fiske Stone Scholar, and received his B.A. from Columbia University in 1993. During law school, he served as a judicial extern for then-Judge Sonia Sotomayor. He is admitted to practice in California.

Firms

Roles

  • of counsel38
  • lead counsel14
  • trial counsel8
  • counsel7
  • appellate counsel5
  • Lead Counsel4
  • Counsel2
  • principal counsel2
  • of record2
  • co-lead counsel2
  • counsel of record2
  • Attorney to be Noticed1
  • Partner1
  • Of Counsel1
  • Back-Up Counsel (Pro Hac Vice)1
  • attorney of record1
  • lead trial counsel1
  • partner1
  • plaintiff counsel1
  • of counsel / trial team1
  • trial and appellate counsel1
  • case team1
  • partner-level counsel1
  • of-record team member; first formal appearance1
  • district court counsel1
  • supporting counsel1
  • senior counsel1

Cases (104)