Thomas C. DeFilipps

Jeffrey Guise is a Palo Alto, California patent attorney and intellectual property strategist with more than 30 years of experience advising companies on the development, management, and protection of global intellectual property portfolios. As part of Young Basile Hanlon & MacFarlane PC, Dr. Guise works with clients across the biotechnology and life sciences industries, including pharmaceutical, biotechnology, medical device, and medical technology companies. With a Ph.D. in molecular bi...

Erik Puknys’ career in intellectual property began more than 25 years ago, when he joined the U.S. Patent & Trademark Office as a patent examiner. Erik started his legal career at Finnegan’s Washington, D.C. office in 1994, and moved to California in 1997 to help open the firm’s Silicon Valley office. He has represented both plaintiffs and defendants in district courts around the United States, in the Court of Appeals for the Federal Circuit, and in the U.S. Supreme Cour...

Mark R.S. Foster is a lawyer recognized by Best Lawyers in the practice area of Commercial Litigation. Mark R.S. practices law in Palo Alto, California Best Lawyers has recognized Mark R.S. Foster since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Mark R.S. Foster is held by other lawyers.

Karin M. Cogbill is a lawyer recognized by Best Lawyers in the practice area of Litigation - Labor and Employment. Karin M. practices law in San Jose, California Best Lawyers has recognized Karin M. Cogbill since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Karin M. Cogbill is held by other lawyers.

Patrick Hammon is a lawyer recognized by Best Lawyers in the practice area of Commercial Litigation. Patrick practices law in Palo Alto, California Best Lawyers has recognized Patrick Hammon since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Patrick Hammon is held by other lawyers.

Mark Selwyn is a partner in the Litigation/Controversy Department. He joined the firm in 1994. Mr. Selwyn’s practice focuses on intellectual property litigation. Major corporations have relied on him to litigate biomedical, electrical, chemical, mechanical, and business method patents involving a diverse array of technologies, including wireless communications, electronic commerce, digital cameras, solid state disk drives, location sensing, biosensors, water and wastewater filtration, i...

Daniel Olmos is a lawyer recognized by Best Lawyers in the practice areas of Criminal Defense: General Practice and Criminal Defense: White-Collar. Daniel practices law in Palo Alto, California Best Lawyers has recognized Daniel Olmos since 2021. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Daniel Olmos is held by other lawyers.

Anthony Michael Glassman focuses his practice in the areas of First Amendment rights, media law, product disparagement, publicity and privacy rights, crisis management, and white-collar criminal defense. He has tried over 100 civil and criminal trials to jury verdict, and has handled numerous appellate matters before the California Supreme Court and federal appellate courts for the Ninth Circuit en banc , the Fifth Circuit, and the Tenth Circuit. Anthony is a Fellow in the American College of...

Recognized as one of California’s top trial lawyers, Elizabeth focuses her practice on technology, trade secrets, business disputes, and civil rights. She also manages day-to-day operations of the firm. A courtroom veteran, Elizabeth brings keen strategic thinking to every step of litigation. In addition to her trial work, she has handled many sensitive investigations and frequently assists clients in risk management. Clients have described Elizabeth as “an excellent trial lawyer&...

Lloyd Winawer is known for his work on complex business litigation and investigations. Lloyd focuses on disputes arising from mergers and acquisitions and other commercial transactions and securities law matters. Lloyd is the leader of Bergeson’s M&A Dispute Resolution Group. Lloyd has significant expertise in M&A disputes, having litigated and advised on numerous post-closing controversies related to earnouts, purchase price adjustments, contingent value rights, milestone and p...