"Use it or lose it"
It should be noted that the "Use it or lose it" page linked at the bottom of the article is hosted by a firm of IP lawyers, who might well have a rather biased viewpoint given that cases like this are their bread and butter... The EFF has a very different opinion on the issue:
https://www.eff.org/deeplinks/2013/11/trademark-law-does-not-require-companies-tirelessly-censor-internet