Jack Dorsey, a founder of Twitter, got a subpoena. So did Marc Andreessen, a prominent venture capitalist. Larry Ellison, Oracle’s chairman, and the investors David Sacks and Joe Lonsdale received them, too.They were all summoned to share what they know about the rancorous, knock-down, drag-out tech spectacle of the year: the fight between Twitter and Elon Musk, the world’s richest man.Mr. Musk enthusiastically agreed to buy Twitter in April for $44 billion, but has since tried to back out of the blockbuster deal, leading to lawsuits and recriminations. Both sides are set for a showdown in Delaware Chancery Court in October over whether Mr. Musk needs to stick with the acquisition. The torrent of legal demands in the case has forced a who’s who of Silicon Valley to now lawyer up, creating a heyday for top-tier law firms.So far, lawyers for Twitter and Mr. Musk have issued more than 100 subpoenas in the battle, targeting big-name banks (Goldman Sachs, Morgan Stanley), high-profile investors (Andreessen Horowitz, Sequoia), well-known advisers, prominent companies that employ Twitter’s board members (Salesforce, Mastercard) and members of Mr. Musk’s entourage.In the scorched earth campaign, the lawyers have even subpoenaed each other.“Every firm in the Valley is salivating like dogs trying to get in on that action,” said Carol Langford, a professor of legal ethics at the University of San Francisco.Even for a high-stakes corporate lawsuit, the deluge of paperwor …
