1. When did you inform the owner of your intention to vacate the house, was it 2 months in advance or not?.
2. It is understood that the continuance of contract was a deemed one and even though the contract period expired long back, neither the owner nor the tenant extended the contract.
3. Under the same terms & conditions if the rent was paid to the owner, subsequent to the expiry of contract period of 11 months, that means both the tenant and the owner are aware of the 2 months' notice period.
4. Even assuming that a fresh rental agreement was executed by both the tenant & the owner after the expiry of 11 months, the clause of 2 months notice for vacating the house or 2 months rent in lieu of notice would have been mentioned as one of the clauses in the agreement.