Christina V. McCullough

Christina V. McCullough is a highly experienced patent litigator and partner at Perkins Coie LLP, where she focuses on high-stakes patent litigation and appeals for technology companies. Her practice primarily involves electrical engineering and computer science, encompassing areas such as processor and network architecture, semiconductors, cloud computing, telecommunications networks and devices, and internet and software applications. She has a strong focus on representing defendants, as indicated by her tracked appearances and notable client representations.

McCullough has significant experience in both federal district courts nationwide and before the U.S. Court of Appeals for the Federal Circuit. She played a key role in INVT SPE LLC v. T-Mobile USA, Inc., where she represented T-Mobile and secured a summary judgment of patent exhaustion and stipulated judgment of noninfringement, which was affirmed on appeal. Other notable outcomes include representing F5 Networks in a patent litigation and jury trial related to network packet routing, resulting in a summary judgment of noninfringement and favorable damages affirmed on appeal, and securing a jury verdict of noninfringement and invalidity for Intel in a case concerning CRC polynomial circuits.

Her practice also includes extensive experience with post-grant proceedings before the Patent Trial and Appeal Board (PTAB). McCullough has been recognized among the "Top 50 Women in PTAB Trials" by the PTAB Bar Association in both 2022 and 2025. Prior to joining Perkins Coie, she gained experience as an associate at Knobbe Martens Olson & Bear LLP and Fish & Richardson P.C., and served as a law clerk for Judge Kimberly Moore at the Federal Circuit.

McCullough is admitted to practice in Washington and California, and before the U.S. Patent and Trademark Office. She earned her J.D., with honors, from The George Washington University Law School and holds a B.S. in Electrical Engineering from the University of Washington.