Twitch Co-Founder’s New Startup Rents Lawyers to Other Startups

When Silicon Valley companies go looking for legal representation, they generally choose from a short list of well-respected partnerships. There’s 99-year-old Cooley LLP, 58-year-old Wilson Sonsini Goodrich & Rosati, and 24-year-old Gunderson Dettmer. All are run by graduates of prestigious law schools who have decades of experience at the biggest firms. Then there’s the 2-year-old startup Atrium, whose chief executive officer, Justin Kan, has no formal legal training but once starred in an online reality show.

Wearing a baseball cap with a little camera attached to it, Kan filmed himself 24/7 for a few months in ...