Linden staff are required to remove all content utilizing trademarked materials, with or without giving notice to the object owner. This includes all RL corporate logos and brand names.
LL employees need to be trained how to recognize trademark infringment and when it is not trademark infringment.
This policy is more extreem then what is writen and understood of Trademark Law.
A good way to understand this, is to look at the Apple symbol. The Apple logo is owned by Apple Records (think Beatles). Apple Records has successfuly defended their trademarked logo from the ever present incursion of Apple Computers for twenty years (Apple Records has successfuly sued them before). The agreement they reached in the 80's said that Apple Comp couldn't sell music (which they are now with iTunes, so Apple Records has taken them to court for trademark infringment, and will likely win, again). Then thier is the Apple Car Group, which also use an Apple logo, but they haven't been sued, because they are in a different feild from Apple Records.
Trademark law allows for the same Trademarks to exist as long as they are in different commercial sectors. Both Apple Car Group and Apple Records can have thier Apple logo's trademarked and there be no conflict.
Likewise, if I start a business of selling appliances, and name my company Nike Appliances, there is no overlap with Nike Corps trademarks. If this corp were in SL there would be no infringment of trademarks and no reason for the removal of the appliances wares.
If LL wants SL to be a successful platform, the law has to be accurately represented.
I cannot imagine better PR then LL representing thier citizens in court in a TrademarkOwner vs. SLResident, where the Residents identity was kept secret till the case was lost (TrademarkOwner vs. Doe).