Witnessly
Expert Witness Profile
Expert Directory

DAVID W. TOLLEN

Greenbrae, CA
Information Technology Contracts and Software Licensing Expert Witness

Is this your profile?

Claim this listing to verify your information, add details, and be discoverable by attorneys searching for expert witnesses.

Claim Your Profile

Professional Summary

DAVID W. TOLLEN is an Information Technology Contracts Expert specializing in litigation involving software licenses, cloud computing agreements, and related tax issues. With a career encompassing legal practice, academic instruction, and authorship in technology contracts, he brings a multifaceted perspective to his litigation work. His work centers on investigating contractual compliance, assessing the validity of IT agreements, and evaluating whether industry standards have been met.

Mr. Tollen has been retained in numerous expert witness and consulting engagements across the United States, involving software licensing disputes, cloud services agreements, and IT contract tax issues. His J.D. from Harvard Law School, along with his Ll.M. from Cambridge University, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving software licensing standards and IT contract compliance.

Work Experience

Sycamore Legal, P.C. — Founder and President, Attorney, Expert Witness, Trainer | 2014–Present Tech Contracts Academy, LLC — Founder and Trainer | 2018–Present U.C. Berkeley Law School — Lecturer | 2019–Present Adeli & Tollen LLP — Co-Founder, Attorney, Trainer | 2007–2013 Tollen Legal — Principal, Attorney | 2005–2007 Simpson Partners LLP — Contract Partner, Attorney | 2002–2004 Clicktime.com, Inc. — Vice President of Business Development | 1999–2001 Centura Software Corporation — General Counsel | 1998–2000 Morrison & Foerster LLP — Associate, Attorney | 1995–1998

Expert Intelligence

AI-Generated AnalysisBased on public information

Best Descriptor

David W. Tollen specializes in expert witness services for software licensing and IT contracts.

Best Use Cases

  • 1litigation involving software licenses
  • 2disputes over cloud computing agreements
  • 3expert testimony on IT contract standards

Full analysis available to registered users

View full report

Work with DAVID?

Create a free account and contact through Witnessly.

Let's Get Started!

Education

  • Ll.M.

    Cambridge University, Queens’ College · 1994

  • J.D.

    Harvard Law School · 1993

  • B.A. in History

    University of California at Berkeley · 1990

© 2026 Witnessly. All rights reserved.