Diana M. Rutowski

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...

A seasoned trial lawyer with significant experience in both state and federal courts in Santa Clara County, Bill’s expertise in representing businesses and individuals in complex civil litigation has provided clients many noteworthy results. In addition, Bill works with individuals and families in cases involving litigation such as will contests, trust disputes, and related issues. Bill is often called into family law matters when specific litigation expertise is required in cases where...

Erik Olson's practice focuses on the litigation of securities, corporate governance, and intellectual property disputes, with particular emphasis on clients in the biotechnology, medical device, retail, and high-technology industries. In securities-related matters, Mr. Olson has repeatedly obtained dismissals of federal class action lawsuits under the Private Securities Litigation Reform Act and successfully defended those dismissals before the Fourth, Ninth and Tenth Circuits for numerous pr...

Laurelle M. Gutierrez has a diverse practice representing high-net-worth individuals and their families with respect to all aspects of gift, estate and generation-skipping wealth-transfer tax planning, as well as trust and estate administration. Read full biography: https://www.mwe.com/people/gutierrez-laurelle-m/

Allison M. Leopold Tilley is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Allison M. Leopold, who practices law in Palo Alto, California, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Allison M. Leopold is held by other top lawyers in the same geographic and legal practice area.

Judith Hasko is the Chair of the Transactional Department and Co-Chair of WilmerHale’s Life Sciences Practice. She provides counsel to life sciences companies and their investors on strategic, intellectual property and technology-based commercial transactions. Companies in the biotechnology, pharmaceutical, medical device and diagnostic product sectors, along with their investors, depend on Ms. Hasko for guidance and execution of licensing, corporate partnerships, joint ventures, co-pro...

Magan Pritam Ray is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Magan Pritam, who practices law in East Palo Alto, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Magan Pritam is held by other top lawyers in the same geographic and legal practice area.

Steven Ellenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Trusts and Estates. Steven, who practices law in San Jose, California, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven is held by other top lawyers in the same geographic and legal practice area.

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&...

A member of the trial bar for over 50 years, Jim has unparalleled experience and skill in preparing and presenting cases for adjudication – whether by jury, judge, arbitrator, mediator or the parties themselves. He represents Silicon Valley companies with commercial, trade secret and intellectual property issues. Jim also represents individuals in a wide variety of matters, including civil rights actions, employment disputes, family law and criminal defense.