The International Olympic Committee said that Taymazov, who already lost his 2008 gold medal for doping, has now been stripped of the 2012 gold in the 120kg category.
The IOC said he tested positive for the banned steroid turinabol when his sample from the 2012 games was retested using more modern lab technology.
Even if Taymazov's argument were true, the commission ruled, it would still be fair to disqualify him from the 2012 event. It also noted Taymazov couldn't explain why turinabol was in his system in the first place.
The silver medalist, Davit Modzmanashvili, was already disqualified back in January. That leaves the event with only its two bronze medalists — Iranian Komeil Ghasemi and Russian Bilyal Makhov — until the IOC decides whether it will reallocate the medals.