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Coblentz, Patch, Duffy & Bass LLP

USA: California: San Francisco ( TAGLaw )
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Coblentz, Patch, Duffy & Bass LLP

www.coblentzlaw.com
One Montgomery Street
Suite 3000
San Francisco, California,
USA, 94104
 +1 415 391 4800
 +1 415 989 1663

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  • Coblentz Named a “Recommended Firm” for Dispute Resolution and 6 Partners Recognized in Benchmark Litigation’s 2026 Edition
  • Duff Beach Elected to Lawyers’ Committee for Civil Rights of the San Francisco Bay Area’s Board of Directors
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  • It’s Okay to Say No to AI Notetaking and Meeting Recordings
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Hejinian, Mark

San Francisco, California, USA
+(415) 772-5713
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mhejinian@coblentzlaw.com
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Hejinian, Mark

San Francisco, California, USA
+(415) 772-5713
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mhejinian@coblentzlaw.com
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Mark Hejinian is a trial attorney focused on commercial litigation matters, shareholder derivative suits, securities fraud, and consumer class action defense. He advises companies, boards, officers, and directors with respect to fiduciary duties and navigating complex board governance issues.  He has represented clients in the telecommunications, pharmaceutical, financial, creative services, and insurance industries. He also represents clients in white collar investigations as a member of the firm’s White Collar Defense and Investigations group.

Mark is co-chair of the firm’s Pro Bono Committee and has an active pro bono practice. He was honored as an Outstanding Volunteer in Public Service by the San Francisco Bar Association Volunteer Legal Services Program and received the Wiley W. Manuel Pro Bono Services award for public service.

Prior to joining the firm, Mark clerked for the Honorable Jan E. DuBois of the U.S. District Court for the Eastern District of Pennsylvania and the Honorable Judith Bartnoff of the Superior Court of the District of Columbia. Before attending law school, Mark was a U.S. Peace Corps volunteer in Guyana, South America.

https://www.coblentzlaw.com/attorneys/mark-l-hejinian/

Practice Areas
  • Intellectual Property / Information Technology
  • Litigation & ADR
  • White Collar Crime

 

Practice Areas

  • Intellectual Property / Information Technology
  • Litigation & ADR
  • White Collar Crime
Language Skills
  • English

 

Language Skills

  • English
Specialty Groups
Bio

Mark Hejinian is a trial attorney focused on commercial litigation matters, shareholder derivative suits, securities fraud, and consumer class action defense. He advises companies, boards, officers, and directors with respect to fiduciary duties and navigating complex board governance issues.  He has represented clients in the telecommunications, pharmaceutical, financial, creative services, and insurance industries. He also represents clients in white collar investigations as a member of the firm’s White Collar Defense and Investigations group.

Mark is co-chair of the firm’s Pro Bono Committee and has an active pro bono practice. He was honored as an Outstanding Volunteer in Public Service by the San Francisco Bar Association Volunteer Legal Services Program and received the Wiley W. Manuel Pro Bono Services award for public service.

Prior to joining the firm, Mark clerked for the Honorable Jan E. DuBois of the U.S. District Court for the Eastern District of Pennsylvania and the Honorable Judith Bartnoff of the Superior Court of the District of Columbia. Before attending law school, Mark was a U.S. Peace Corps volunteer in Guyana, South America.

https://www.coblentzlaw.com/attorneys/mark-l-hejinian/

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