X filed a notice of appeal to the 9th U.S. Circuit Court of Appeals on Tuesday. U.S. District Judge Charles Breyer in San Francisco dismissed X's case on March 25, calling it "evident" that X sued CCDH to silence critics and punish them for their speech. Though Musk has long styled himself as a free-speech champion, X said CCDH's research was scaring advertisers away, costing it tens of millions of dollars in revenue.