Djony Gunawan v Christina Lesmana

Mr Djony Gunawan and Ms Christina Lesmana, former spouses who divorced in Indonesia in 2013, have long disputed a Singapore flat, the Seaview Property. He bought it in 2007, and in June 2009 she was registered with him as a joint tenant without contributing to the price. In consolidated proceedings, HC/OS 1095/2021 (her application for sale in lieu of partition and half the proceeds) and HC/OA 713/2022 (his claim to be sole beneficial owner), he argued a resulting trust. He relied on several documents she said were not authentic, including a settlement agreement dated 21 December 2018 in which, on his account, she agreed to remove her name from the title and leave him all sale proceeds. She said it was forged. After he chose not to proceed with cross-examination, the High Court treated his disputed allegations as not proved and ruled for her on the presumption of advancement; the Appellate Division dismissed his appeal.

Acting in person, he then filed HC/OA 979/2025 for a declaration that the settlement agreement is valid, binding and enforceable and for her name to be removed. In HC/SUM 2843/2025 she applied to strike out OA 979 on the basis of cause of action estoppel, issue estoppel, the extended doctrine of res judicata, and time bar.

1. Whether cause of action estoppel or issue estoppel barred the claim on the settlement agreement
2. Whether the claim was an abuse of process under the extended doctrine of res judicata because it should have been raised earlier
3. Whether the claim was time-barred

The court first noted that the High Court had found the agreement not proved, which is different from disproved; it made no finding either way on whether the agreement existed.

The earlier proceedings turned on one material fact: his intention in June 2009 when she was added as a joint tenant. OA 979 relied on a different fact, an agreement on how ownership was to be dealt with from December 2018. A finding that she later agreed to give up her interest would not contradict the finding that he meant to benefit her in 2009. The causes of action and the issues were therefore not identical, so neither estoppel applied.

On the extended doctrine, he could have relied on the agreement before, but had a bona fide reason not to. Enforcing it implies she once had an interest to give up, which would have undercut his case that she never had any beneficial interest. The claim was not a collateral attack, and the absence of any adjudication of the agreement was a special circumstance. The further evidence he now wished to use, from an attesting witness and a forensic document examiner, was however not fresh evidence.

The time-bar argument failed because the agreement as exhibited did not say when she had to withdraw her name, and she adduced no facts showing a breach early enough. The court also observed that, since the agreement's authenticity is contested, an originating application might not be a suitable procedure.

The Assistant Registrar dismissed the striking-out application, allowing OA 979 to proceed, and ordered that Mr Gunawan, though self-represented, be paid $2,000 (all in) in costs for resisting it.