USA Federal Law -
I have a company worth about $6m. I got on the bad side of a person with a company worth well over $750m (with attorneys on staff). The CEO threatened to bury me in an endless sea of frivolous lawsuits, so that I'm essentially paralyzed having to defend myself in court day after day until my legal expenses drain my bank account and put me out of business.
Is this legal? Are there any countermeasures or defenses against it?