MOSCOW, November 24 - RAPSI. The Chamber for Patent Disputes has satisfied a petition filed by Mail.Ru, Russia's largest free e-mail service, to cancel a mobile phone communication dating system patent earlier registered by a businessman, the chamber reported on Thursday.

The patent was issued on April 29, 2008 for Sergei Misskiy. Mail.Ru protested the registration, claiming that the patent for a similar dating system had been registered on December 13, 2007.

Mail.Ru is the founder of the largest free e-mail service in Russia and the CIS.