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ARTICLE · 26 SEPTEMBER 2025

GSK Succeeds In Bad Faith Case In Turkey

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Mutlu Yıldırım Köse and Begüm Soydan report on a case in Turkey concerning the registration of the trade mark Clindoxyl and its use to threaten infringement proceedings against the genuine right holder...

TurkeyIntellectual Property
Mutlu Yildirim Köse
Mutlu Yildirim Köse
Begüm Soydan
Begüm Soydan
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Mutlu Yıldırım Köse and Begüm Soydan report on a case in Turkey concerning the registration of the trade mark Clindoxyl and its use to threaten infringement proceedings against the genuine right holder, in which the  courts protected the rightful owner and invalidated the bad faith registration.

Background

The dispute concerned the bad faith registration of a trade mark that had previously been registered in Türkiye in the name of Stiefel Laboratoires, Inc., an affiliate of GlaxoSmithKline Plc, the global pharmaceutical group (GSK).

GSK had been commercially using the Clindoxyl trade mark since 2010 in Türkiye, particularly in connection with acne treatment products, with a valid marketing authorisation from the Turkish Ministry of Health.

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