Ubisoft has filed an opposition to two trademark registrations made by EA. Rising from concerns the EA trademark of 'Ghost' could hurt Ubisoft's existing brands, the formal opposition was filed January 29.

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The filing was dug up by NeoGAF from an official listing on the United States Patent and Trademark Office website. Essentially, Ubisoft is concerned its own property would "be damaged by registration of the mark."Specifically, Ubisoft mentions its Ghost Recon series as being specifically vulnerable should the mark be awarded to EA.Ubisoft cites its use of Ghost Recon "in connection with video games and entertainment services" previous to EA's trademark filing in March of last year.Currently Ubisoft is working on a new Ghost Recon game EA has until March 9 to answer the opposition, although it could request an extension. The company owns studio Ghost Games, with offices in Sweden and the UK. Ghost Games is the developer behind last year's Need for Speed reboot.

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