by Gert Würtenberger According to the observations of the author of this contribution, cancellation proceedings in relation to Union trademarks having been registered for more than 5 years are steadily increasing. This is not astonishing bearing in mind that the Union trademark system exists now for more than 20 years. A Union trademark registration is subject to the owners’ use after a period of 5 years following its registration unless proper reasons for non-use exist. Otherwise, a trademark cannot be enforced. Moreover, it is subject to cancellation request to be filed by third parties because of non-use. The use must…