His practice focuses on intellectual property and antitrust disputes in high technology industries. He has represented clients in a wide range of industries, including software, semiconductors, entertainment and pharmaceuticals.
Mr. Gratzinger frequently writes and speaks about various aspects of intellectual property law. In May 2018, he delivered a presentation about California’s unique approach to trade secret rules at a program hosted by Law Seminars International. Mr. Gratzinger also teaches Internet Law as an adjunct professor at Pepperdine Law School.
Recently, Mr. Gratzinger represented Gilead subsidiary Kite Pharma in a trial and on appeal in a multibillion-dollar case involving the cancer treatment drug Yescarta®, resulting in the invalidation of the patent asserted against Kite, represented Amgen in defending against infringement claims relating to its launch of biosimilar oncology therapeutics, and represented PNC Bank in disputes relating to mobile check deposit and auto-capture technology.
He also maintains an active pro bono practice and has provided pro bono representation in various cases involving immigration, First Amendment law, election law and other issues. He has been honored with the ACLU’s Criminal Justice Award for his work challenging the constitutionality of jail informant policies. Mr. Gratzinger is on the Board of Managers of the Ketchum Downtown YMCA, a non-profit serving the downtown Los Angeles community, and helps to organize the annual YMCA Los Angeles Stair Climb fundraiser.