Dear Sir,
Indian law does not permit ex-parte decree. For the US divorce decree to be valid in India, both of partners should have either contested the divorce or should have mutually consented to divorce in the US Court.
First, when an ex-parte decree is passed by a Foreign Court, it would not be valid and conclusive in India. A decree would be considered ex-parte if summons are not served on the opposite party. ... Execution of a foreign divorce decree: A foreign judgment can be executed in two ways in India.
A foreign judgment can be executed in two ways in India. The ways are as follows:
First, by filing an execution under Section 44A of the Civil Procedure Code. Section 44A states that a decree passed by Courts in reciprocating territories can be executed in India as if the decree was passed by the Indian Courts only. The Court also see the judgments passed by foreign court as per sec.13 of Civil Procedure Code .
Secondly, by filing a civil suit upon the foreign judgment/decree. For instance, the decree does not pertain to a reciprocating territory or a superior Court of a reciprocating territory, as notified by the Central Government in the Official Gazette, the decree is not directly executable in India.