SAN FRANCISCO — After years of scorched-earth litigation, serial entrepreneur Raj Abhyanker has been accused of fabricating key documents in his case against a company he claims stole his idea. Now, his lawyers want out—and he doesn’t want to let them go.

The lawyer-entrepreneur is waging a bitter trade secrets and trademark battle with social-media startup Nextdoor.com. Abhyanker’s four attorneys—all affiliated with his virtual law firm, LegalForce RAPC—took the rare step of moving to withdraw as counsel this month saying they are compelled to by their obligations under the California Rules of Professional Conduct.