D. Gill Sperlein, Partner


  • California State Bar
  • All California Federal Courts
  • U.S. District Court for the Western District of New York
  • U.S. District Court for the Northern District of Texas
  • U.S. District for the Southern District of Florida
  • Ninth Circuit Court of Appeals
  • D.C. Circuit Court of Appeals
  • United States Supreme Court

A native of Baltimore, D. Gill Sperlein graduated magna cum laude from American University’s Washington College.

Upon moving to San Francisco in 1994, Sperlein worked for Crosby Heafey Roach and May and later as associate to noted First Amendment and civil rights attorney Tom Steel.

From 2002 to 2011, Sperlein served as General Counsel at Io Group, Inc., where he developed an intellectual property protection program and spearheaded the corporation’s litigation department. During that time he also served on the Board of Directors of the Free Speech Coalition where he instituted programs and policies designed to mitigate the effects of wide-spread on-line infringement.

Sperlein now maintains a private practice in San Francisco, focusing on intellectual property, First Amendment law, general business litigation, and defamation defense, particularly for bloggers.

In 2013, Sperlein obtained a preliminary injunction freezing the assets of FF Magnat, Limited, the operators of the cyberlocker oron.com. Oron appealed the preliminary injunction but the case settled prior to a ruling by the Ninth Circuit.

Sperlein currently represents plaintiffs brining an as applied challenge to San Francisco’s recently enacted nudity ban, which the City has implemented in an unconstitutional manner, resulting in the prior restraint of citizen’s rights to advocate for body freedom and repeal of the law.


  • B.A. – Towson State University, International Studies
  • J.D. – The Washington College of Law, American University, Magna Cum Laude

★★★★★ based on 3 AVVO reviews

Dennis "Gill" Sperlein


Excellent to date. We have a complicated and ongoing Civil Liberties case with national and international implications. Gill has provided good advice and creative ideas.

Very helpful with contracts, small business setup


Gill is my go-to guy for contracts, waivers, business filings, etc.; he helped me take my expanding hobby and turn it into a properly set up LLC. I originally hired him because of his industry-specific expertise, but he's now my first stop for any legal question.

Compassionate Yet Tough


I have a blog that is critical of an anti-science organization. When that well-funded organization sued me for trade name infringement and defamation to shut down my site, I could not afford to fight back. Mr. Sperlein and another attorney came to my aid to protect my First Amendment rights. Thanks to Mr. Sperlein that case was dismissed by the 5th Circuit Court. But it did not end there. The anti-science organization appealed and Mr. Sperlein fought on and soon the appeal was dismissed as well. If not for Mr. Spelein I would have had to give up not only my website, but also my Free Speech rights.