Yes, a divorce petition can be filed after reconciliation of a divorced marriage, provided fresh grounds are available on which divorce can be sought.
Therefore, if there are any fresh grounds after reconciliation, on which divorce can be sought under the provisions of the law, then a fresh divorce petition is not barred under law. The principle of res judicata is not applicable, strictly speaking, to divorce matters, as there could be completely fresh grounds giving a fresh cause of action. However, it would all depend upon the facts and circumstances of each case, though there is no legal bar.
In this regard, you may also see the following reply which is relevant to your question: First divorce petition withdrawn then second petition filed, is it valid?
Dr. Ashok Dhamija is a New Delhi based Supreme Court Advocate and author of law books. Read more about him by clicking here. List of his Forum Replies. List of his other articles. List of his Quora Answers. List of his YouTube Videos.