The GPLv2 doesn't grant any trademark rights. The only mention of trademarks in the GPLv3 at all is a single clause explicitly allowing the grantor not to lice

The GPLv2 doesn't grant any trademark rights. The only mention of trademarks in the GPLv3 at all is a single clause explicitly allowing the grantor not to license trademark rights. Licensing code under the terms of the GPL does not constitute signing up for trademark infringement. The article's primary focus was on trademarks, as it should be. Nowhere did the authors claim that this vendor was violating the terms of their code license.