It all depends on how much that company pays their lawyers to get around the law for them. Google and Microsoft and Apple can get away with using someone else's IP just by running up the court costs until the IP owner has to settle out of court in order to avoid more than their income in court costs.
Google's search engine serves links to torrents. If you Google "Windows 10 Torrent" you will find torrents that will download Windows 10 on Google's search. Does that mean Google is doing the same as KAT? I'd say yes to that, KAT is a torrent search engine and Google's search engine can find torrents for you too.