That's a story conceit. If you're going to pay off < 5 cent suits, and ignore suites from Nigeria, you just program your lawsuit filter to do it. If that doesn't cut it, you buy access to an legal expert service that is updated as needed for suites, and decides for you using bounds you set.

So there would actually be two mutually parasitic industries, much as there are today for virii/virus filters, and spam/spam filters. Of course they're still both social parasites, not a nice thing, etc.