That is dramatically incorrect. A company (and person!) can sue whoever they want, whenever they want, for whatever reason they want. The claim doesn't need to

That is dramatically incorrect. A company (and person!) can sue whoever they want, whenever they want, for whatever reason they want. The claim doesn't need to be truthful. Frivolousness of the claims doesn't mean it's free for you to defend against. See "nuisance lawsuit." Several companies in SV are known for applying them to ex-employees that didn't breech any legal or contractual obligations. IANAL. THIS DOES NOT CONSTITUTE LEGAL ADVICE.