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Malaysia’s national upstream company Petronas Carigali is examining its options after losing a court appeal over an historical patent dispute relating to a mobile offshore production unit (MOPU) that it had acquired.
After years of legal wrangling and courtroom action, Kingtime International last month won its appeal against Petronas Carigali with the Court of Appeal overturning a 2023 High Court decision that had dismissed Kingtime’s infringement suit and invalidated its patents.
Petronas Carigali's parent company Petronas told Upstream in a statement that its E&P subsidiary was reviewing its options following the court decision.
“Petronas Carigali confirms that the Court of Appeal has on 19 September 2025 ruled against the company in a patent-related matter involving Kingtime International Ltd.
“The company is presently evaluating its options on the way forward,” Malaysia’s energy giant said.
Tay & Partners, which represented the plaintiff, noted that at the heart of the dispute is MOPU with a detachable wellhead support structure built using Kingtime’s patented invention. Kingtime had asserted that Petronas Carigali had taken delivery of this MOPU from a third-party manufacturer and used it, fully aware that the unit incorporated its patented technology.
