On 30 November 2020, REC Solar Pte. Ltd. filed Case No. 1:20-cv-01622 in the District of Delaware against Hanwha Solutions Corp. and its US subsidiary Hanwha Q. Cells USA, Inc., asserting infringement of US Patent No. 10,749,060. The patent, filed under application number US14/900942, covers photovoltaic cell technology deployed across Hanwha’s commercially significant Q.Peak DUO and Q.Plus DUO solar module product lines — encompassing at least 17 distinct product variants including the G5 through G9 generations.

After more than four years of litigation, the parties jointly stipulated to dismissal with prejudice of all claims and defenses pursuant to Federal Rule of Civil Procedure 41, with the case formally closed on 6 May 2025. Dismissal with prejudice is a terminal disposition: REC Solar cannot re-file the same infringement claims against Hanwha on the ‘060 patent. The agreed cost allocation — each side bearing its own fees — is consistent with a negotiated resolution rather than an adjudicated loss by either party.

A duration of 1,618 days — roughly double the typical contested patent case in Delaware — suggests the parties engaged in substantive discovery, claim construction, and likely pre-trial motion practice before reaching a resolution. The absence of any publicly reported royalty award or injunction, combined with the mutual cost-bearing arrangement, is consistent with a confidential settlement reached just before or during trial preparation, though the public record does not confirm financial terms. What drove the eventual resolution — whether claim construction outcomes, IPR proceedings, or commercial negotiations — remains undisclosed.