Recognized in Ones to Watch since 2026 
Mary Cullen is an associate in Williams Kastner’s Commercial Litigation and Labor & Employment practice teams. She represents businesses and individuals in a range of labor and employment, commercial, transportation, and intellectual property matters. Prior to joining Williams Kastner, Mary’s practice involved litigating wage and hour actions on behalf of employers. She also represented medical and legal professionals in malpractice matters and consumer protection disputes, and advised on corporate governance issues.
Mary relocated from New Jersey to Washington in 2018, graduating from Gonzaga University School of Law in 2021. During law school, Mary worked for a patent law firm assisting with patent prosecution involving e-commerce, artificial intelligence, machine learning, and other technologies. After graduating from law school and passing the bar exam, Mary served as a judicial law clerk to Judge Laurel Siddoway of Division Three of the Washington State Court of Appeals.
Mary was recognized by The Best Lawyers in America: Ones to Watch (2026 & 2027 Edition) for Commercial Litigation and Litigation – Labor and Employment.
Outside of the office, Mary enjoys experimenting with new baked goods recipes and exploring new corners of the PNW, whether on a hike or camping with her White Swiss Shepherd, Beau, or skiing down the slopes.
