The actor hinted that he could have another chance to win 'Best Actor' for playing George Smiley if John le Carré's follow-up novel Smiley's People - the third book in the 'Karla Trilogy' after Tinker Tailor Soldier Spy and The Honourable Schoolboy - is adapted for film.
"I'm glad that [the nomination] was [for] Tinker Tailor Soldier Spy, and we're very proud of the film," he told BBC One's Breakfast on the red carpet at the Vanity Fair party. "But we may be doing Smiley's People, so I might get another go at it."
On losing out in the 'Best Actor' category to The Artist's Jean Dujardin, Oldman stated: "I guess there's always another time - I mean, I know why I've not been there before [collecting an Oscar], because I never really pushed it or lusted after it or never campaigned for it, so it doesn't surprise me."
Asked if he was upset about the defeat, Oldman laughed and declared: "Devastated! No, I'm fine! I had an instinct that it would probably go to the French - they've been winning everything else!"
Oldman first hinted about a possible Tinker, Tailor, Soldier, Spy sequel back in November.
More from the Oscars 2012:
> Oscars 2012: 'The Artist', 'Hugo' win five Academy Awards
> Oscars: Meryl Streep pays tribute to friends in 'Best Actress' speech
> Oscars: Billy Crystal remembers Gil Cates in 'In Memoriam' segment
> Oscars: 'The Artist's Michel Hazanavicius win 'Best Director' gong
> Oscars 2012: Bret McKenzie triumphs in 'Best Original Song' category
> Christopher Plummer wins 'Best Supporting Actor' Oscar for 'Beginners'
Watch Gary Oldman talk to Digital Spy about Tinker, Tailor, Soldier, Spy below: