On March 16, 2026, IPG Photonics Corporation (NASDAQ: IPGP), a leader in fiber laser technology, announced a significant legal development regarding a patent infringement lawsuit. The Local Division of the Unified Patent Court in Düsseldorf, Germany ruled that certain uses and designs of IPG's adjustable mode beam (AMB) lasers infringe upon European Patent 2,624,031, held by Trumpf SE & Co. KG. This ruling specifically affects AMB laser products sold in Germany, France, and Italy, which constitute less than 1% of IPG's total sales. In response to the ruling, IPG is implementing contingency measures to support its AMB customers, ensuring that their needs are met despite the legal challenges. Notably, other laser models produced by IPG were not implicated in this lawsuit, and the company's broader product portfolio remains available to customers. The court's decision allows for potential remedies for the patent owner, including injunctions, recalls, and damages, which will be determined in subsequent proceedings. IPG has expressed its disagreement with the ruling and plans to appeal to the UPC Court of Appeal, indicating its commitment to defending its products and market position. This legal battle is part of a larger context, as IPG previously disclosed that Trumpf affiliates have initiated two separate actions in the Unified Patent Courts in Mannheim and Düsseldorf, asserting different patents against IPG's AMB lasers. The company has already announced its intention to appeal the Mannheim court's decision, and this latest ruling pertains to a different patent in the Düsseldorf case. As IPG navigates these legal challenges, the company remains focused on maintaining its leadership in the fiber laser market and ensuring the continued availability of its innovative products to customers worldwide.

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