Kirsten is a trial lawyer focusing on intellectual property and complex commercial litigation. She has served as lead counsel in numerous trademark, trade secret and patent infringement lawsuits in jurisdictions throughout the United States involving computer software and hardware, business methods, wireless technology, materials science and chemical products, and medical device technology. Kirsten has successfully handled numerous Markman hearings before District Court judges and court-appointed Special Masters. Further she has litigated disputes related to copyright matters, as well as software licenses and manufacturing agreements. Kirsten has represented Accuray Incorporated, Safeway, Kroger, Bayer/Medrad, Philips Healthcare, PPG Industries, Nintendo, 3M, Saint-Gobain, PNC and TeleTracking Technologies in intellectual property litigation matters.