A federal judge in Oakland, California, refused to dismiss OpenAI’s counterclaims that Elon Musk conducted a “years-long harassment campaign” aimed at damaging the artificial-intelligence company he co-founded in 2015. U.S. District Judge Yvonne Gonzalez Rogers ruled that allegations describing Musk’s press statements, social-media posts, lawsuits and an alleged sham bid for OpenAI’s assets were legally sufficient to proceed. The case is set for a jury trial in March 2026. The decision is the latest turn in litigation that began last year when Musk sued OpenAI and Chief Executive Officer Sam Altman, alleging the startup’s shift to a for-profit structure violated its original mission. OpenAI countersued in April, accusing Musk of fraudulent business practices and efforts to undermine the company to benefit his rival venture, xAI. In Tuesday’s order, Judge Gonzalez Rogers also pared back several of Musk’s own claims against OpenAI and its key backer Microsoft but left the core of OpenAI’s allegations intact. In a separate ruling the same day, U.S. District Judge Theodore Chuang in Maryland allowed a lawsuit to move forward that accuses Musk of unlawfully directing efforts to dismantle the U.S. Agency for International Development while he was involved with the Department of Government Efficiency under the Trump administration. The judge rejected the Justice Department’s bid to throw out the case, keeping alive allegations that thousands of USAID jobs and contracts were improperly terminated.