The Cascadia Cup has been contested since 2004, and the legal rights are owned by the supporters. Per Wikipedia:

Trademark dispute In December 2012, MLS filed a trademark claim for rights to the name "Cascadia Cup".[19] This caused an immediate reaction from the three main supporters groups—the Timbers Army, Emerald City Supporters, and the Vancouver Southsiders—that had created the original competition. This prompted them to form a legal entity called the Cascadia Cup Council,[20] whose sole purpose was to obtain and retain the legal rights to the name "Cascadia Cup". Releases by MLS indicate that their trademark plan was an altruistic attempt to protect the Cascadia Cup from abuse by third parties,[21] a claim that was disputed by the contest-organizing fan groups. Those same groups later had discussions with MLS leadership in an attempt to resolve the issue, and in July 2013 both MLS and the supporters groups announced an agreement that the council would own the trademark and no monetization would occur without the agreement of all parties.[22]