Almost a dozen former Tesla Inc. employees who left to work Rivian Automotive Inc. can’t avoid a trial over claims in a trade secrets suit that they breached Tesla confidentiality agreements before they joined its upstart rival.

A state court judge on Wednesday tentatively denied the employees’ request for a summary adjudication ruling — which would have dismissed Tesla’s claim that they had signed agreements and other contracts that forbade them from stealing proprietary information and disclosing it to competitors. The judge granted the employees’ request for a ruling on another claim by Tesla that the workers illegally accessed the company’s computers to copy and steal data.

The ruling, if finalized, would allow the breach of contract issue along with the key claim in the legal battle that Rivian and the former employees violated California’s trade secret laws to proceed to a trial.

Tesla claimed in its lawsuit, filed in July 2020 and revised in 2021, that Rivian had directly hired at least 70 of its former employees, some of whom were “caught red-handed” stealing the core technology for its next-generation batteries.

Rivian has denied any wrongdoing and says Tesla’s lawsuit is an effort to thwart competition in the electric-car market.

The case is Tesla Inc. v. Rivian Automotive Inc., 20CV368472, California Superior Court, Santa Clara County (San Jose).