Indeed, many of these patent troll houses have big time investors backing them, vultures hoping to cash in on the remnants of the small-to-mid companies they sue into oblivion.

At my last job I fielded a call from the "scanner patent" guys, luckily I knew what they were up to and I declined to answer any questions. They framed the call as being from Staples for a survey about the office equipment we may have bought from them, i.e. they flat out lied. Since I was in charge of all office and IT equipment purchase decisions, I knew we'd never bought a thing from Staples, and when they started specifically asking about multifunction printers with scanners, I just said "troll someone else" and hung up.