well, well, well....welcome to the unlimited wealth of attorneys that google can select from. if google is interested in a .ru, they will simply step up, claim their TM rights and swiftly take the domain from you.
all things considered, for mygoogle.ru, i wouldn't even value it at reg.fee due to the problems that are to expect.
*disclaimer: if i am totally mistaken and the TM rights that google has will not apply to your domain, then it's an entirely different ballpark.