The Court of Appeal through the judgment of His Lordship Idrus Harun JCA has this to say: Page 4 of 13 “[12] The main bone of contention between counsel in the first suit [referring to the OS] was whether the defendants were recognised as „Malay‟ under the Malay Reservation Enactment Johor 1936 (No. 1 of 1936). The learned judge who heard the defendant‟s application to strike out the first suit [referring to the OS] had duly considered this issue which was fully ventilated before His Lordship. Based on the SSM‟s company information in respect of the defendant (exh AK3) the learned judge in the first suit did consider this documentary evidence which showed that the defendant, as the second defendant in the first suit, was „Malay‟. Accordingly, on 20 November 2009, the first suit was dismissed by the learned judge. The plaintiff in the present action once again raised the same issue which had already been adjudicated and decided in the first suit of which the plaintiff, for reasons best known to them, chose not to appeal. The learned judge [the then trial judge], in this regard, tried in vain to distinguish the two suits by saying that the first suit was in connection with the issue of the registration of the lease at the initial stage of registration whereas the instant action was related to the status of the registration of the lease after the authority had revoked it. Whatever that explanation means, in our judgment, the fact remains that both cases clearly boiled down to the issue of the status of the defendant, and the reliefs sought by the plaintiff Page 5 of 13 which we find to be identical and that the High Court in the first suit had already made a decision.” [p. 828] “[14] It is trite law and, indeed, a fundamental rule that a matter that has been adjudicated by a competent court ought not to be pursued further by the same parties. It is irrefutable fact that the first suit was decided by a court of competent jurisdiction. The matter had already been decided on the merits by the competent court and that accordingly it is conclusive between the defendant and the plaintiff as to all matters that were already litigated or that could have been litigated in the first suit. Res judicata therefore applies to the present action as to estop the plaintiff from litigating the same issue. The respondent [sic], being the party asserting res judicata had shown that there was a final judgment on the merits and that it was conclusive as the plaintiff did not file any appeal against the High Court‟s decision. Therefore, the plaintiff ought not to be allowed to file the second suit [referring to the plaintiff’s claim in this suit].” [p.829] (Note: the decision of the Court of Appeal is reported and cited as Sungai Dinar Sdn Bhd v Koperasi Kecil Wilayah Johor Selatan Bhd [2016] 5 MLJ 825)