U.S. Based Companies Sued For Heat Pipe CPU Coolers

As a European, my initial response to this story is '... only in America'. I understand that, when patents are infringed a person/company has the right to file a lawsuit. What I don't understand is why they file this lawsuit to a reseller and not the manufacturer.

Do you have a heat pipe CPU cooler inside your system? American Technology, Inc. is suing some of the companies that have sold enthusiast heatsinks and cooling equipment to our community for years. Interestingly enough, American Technology, Inc. looks to only be targeting the "little guys" in its lawsuit.