Selecting and developing trademarks and brands are frequently the most important decisions a business can make. Marks that appear secure may be open to attack years or even decades later. A lawsuit filed by Korg Inc. against Jack Meussdorffer highlights how even a long-standing, vigilantly protected mark can be open to attack. - - - - "On Sept. 3, 2013, the multinational company Korg Inc. and its affiliates filed a complaint against Meussdorffer and his Phantom Guitar Works company, seeking to cancel several of Meussdorffer's long-held trademarks and claiming "tortious interference" with the brand's own models. Meussdorffer and his legal team filed a counter-claim, and the case has slogged on ever since."

http://www.oregonlive.com/music/index.ssf/2014/04/phantom_guitar_works_vox_korg_legal_battle.html - - - -