David Tollen is an attorney specializing in software, IT, and intellectual property agreements. He's also the founder of Tech Contracts Chalkboard, a San Francisco company that provides training on drafting and negotiating IT agreements, for businesspeople and lawyers.

David has negotiated and drafted intellectual property and technology contracts of all kinds, representing both buyers and sellers. His experience includes:
- Co-founder of Adeli & Tollen, an IP and technology law firm with offices in the Silicon Valley, San Francisco, and Los Angeles
- General Counsel of a publicly traded software company
- VP of Business Development at a profitable technology startup
- Associate at a global law firm

Finally, David is an experienced and accomplished speaker. He taught rhetoric, advocacy, and public speaking in both college and law school, and ever since he has been passionate about oral presentation. His style is upbeat and highly organized, and he seeks to involve participants in the discussion as much as possible. David is also passionate about organizing complex materials into simple lessons. In his spare time, he writes about history and science for young people.