He is the author of the American Bar Association's bestseller, The Tech Contracts Handbook, Cloud Computing Agreements, Software Licenses, and other IT Contracts, for Lawyers and Businesspeople (ABA Publishing 2015). He is also the founder of Sycamore Legal, P.C., a San Francisco and Silicon Valley law firm specializing in information technology contracts (www.SycamoreLegal.com). Finally, Mr. Tollen is the founder of Tech Contracts Academy, LLC, through which he trains businesspeople and lawyers on software licensing and related contracts -- and provides expert witness services.