Did you read the article? Apple also sued a political party in Norway and whoever is in charge of a bike path in a Germany over their logos. Anyone is open to any lawsuit someone is willing to bring, and a company with tons of cash laying around is willing to bring a lot of lawsuits. Sure, Apple might not win these lawsuits if they were to go to court, but they know that is extremely unlikely to happen. They have hundreds of billions of dollars they can bring to bear, and can and will make the process as expensive as possible for the other side prior to the case making to court, so pretty much any typical company would go bankrupt before making to court. Both sides know this, so most companies will just apologize to Apple for doing nothing wrong, give in, and settle out of court.
You should pay more attention. Apple did not sue in this case and did not sue the political party in Norway. They filed a complaint with the patent office in the two countries.
It is a huge difference.