The UK telecom O2 successfully won an opposition against a UK trademark application for Indigo Blue applied for class 41:

Arranging and conducting of concerts; Services for the showing of video recordings; Services providing entertainment in the form of live musical performances; Showing of prerecorded entertainment; Singing concert services; Song publishing; Song writing services; Songwriting; Sound recording and video entertainment services; Sound recording services; Sound recording studio services; Music concerts; Music entertainment services; Music festival services; Music performance services; Music performances; Music production; Music publishing; Music publishing and music recording services; Music publishing services; Music recording studio services; Musical concert services; Musical concerts by radio; Musical concerts by television; Musical entertainment services; Musical performances; Entertainer services; Entertainer services provided by musicians; Entertainment; Entertainment by means of concerts; Entertainment by means of radio; Entertainment by means of roadshows; Entertainment by means of telephone; Entertainment by means of television; Entertainment in the form of live musical performances (Services providing – );Entertainment in the form of recorded music (Services providing -);Entertainment in the form of television programmes (Services providing -);Entertainment services; Entertainment services for matching users with audio and video recordings; Entertainment services for matching users with computer games; Entertainment services for producing live shows; Entertainment services for sharing audio and video recordings; Entertainment services in the form of concert performances; Entertainment services in the form of musical vocal group performances; Entertainment services performed by a musical group; Entertainment services performed by musicians; Entertainment services performed by singers; Entertainment services provided by a music group; Entertainment services provided by a musical group; Entertainment services provided by a musical vocal group; Entertainment services provided by performing artists; Entertainment services provided by vocalists.

O2 invoked rights over several of its earlier EU trademarks for INDIGO and INDIGO2 for the same class.

According to the UKIPO, both signs are very similar because of the word INDIGO. The difference between them is the word Blue and the number 2.

From a conceptual point of view, the trademarks are almost identical bearing in mind that for some of the consumers Indigo is a shade of blue. A slight difference can arise only if Indigo is perceived as purple. However, even in that case, both colors are closed.

Taking into account that the first part of the marks is identical, the UKIPO uphold the opposition in its entirety.

This is yet another case which comes to show how important is preliminary trademark clearance search. This search can help a lot in the assessment of the chances one sign has to be registered as a trademark and from another hand to avoid eventual disputes.

It is always advisable to do your homework before to file an application. This will save you time and money.

Source: WIPR.