A US jury on Monday ruled against Elon Musk in his lawsuit against OpenAI, finding the artificial intelligence company not liable to the world’s richest person for having allegedly strayed from its original mission to benefit humanity.

In a unanimous verdict, the jury in Oakland, California, federal court said Musk had brought his case too late. The jury deliberated for less than two hours.

The trial had widely been seen as a critical moment for the future of OpenAI and artificial intelligence generally, both in how it should be used and who should benefit from it.

Following the verdict, Musk’s lawyer said he reserved the right to appeal, but the judge suggested he may have an uphill battle because whether the statute of limitations ran out before Musk sued was a factual issue.

“There’s a substantial amount of evidence to support the jury’s finding, which is why I was prepared to dismiss on the spot,” U.S. District Judge Yvonne Gonzalez Rogers said.