Lufthansa Technik's high-voltage aircraft power outlet technology has been at the centre of a five-year patent infringement dispute with US-based Astronics Advanced Electronic Systems, Japan's Panasonic, and French firm Safran. With an estimated £500m in disputed profits up for grabs, this week's appeal at the Court of Appeal will determine whether Lufthansa is entitled to interest on these profits, as previously ruled by Mr Justice Leech in 2025.
The dispute stems from 2017 when Lufthansa Technik alleged that its competitors had copied and utilised its technology for power outlets while its patent was still active. The London Patents Court initially ruled in Lufthansa's favour, upholding the validity of the patent and finding infringement by the defendants in a 2020 trial. This decision was subsequently confirmed by the Court of Appeal in 2022.
However, despite these favourable rulings, both parties remain dissatisfied with the High Court's calculation of financial compensation, leading to the current appeal. Lufthansa seeks to increase the award, while the defendant manufacturers contest what they see as an overly definitive and excessive payout that includes unlawful interest. The four distinct aspects being appealed by each party will set a significant precedent for intellectual property disputes within the aviation industry.
The outcome of this case is crucial not only for Lufthansa but also for global trade and travel, which heavily relies on the aviation sector. For the Lufthansa Group, securing substantial compensation could significantly contribute to its ambitious revenue target of £10bn by 2030. The implications of this ruling will extend beyond the aviation industry, with potential far-reaching consequences for cross-border patent infringement cases within the UK legal system.