Seoul Semiconductor has secured a permanent injunction in India against the sale of products found to infringe its opto-semiconductor patents, extending a series of favourable rulings for the South Korean technology group across major markets.
Seoul Semiconductor (KOSDAQ: 046890) and affiliate Seoul Viosys (KOSDAQ: 092190) said the Delhi High Court granted the injunction against Ornate Agencies Private Limited and separately extended the order to the company’s managing director.
The Indian ruling follows permanent injunctions secured by the group in Europe and the United States, strengthening its efforts to protect intellectual property covering technologies used across lighting, displays and emerging optical communications applications.
In India, Seoul Viosys obtained a final judgment preventing Ornate Agencies from selling products that infringe its patents. The Delhi High Court also barred the company’s managing director from infringing the relevant intellectual property.
The latest case is part of a wider patent enforcement campaign by Seoul Semiconductor and Seoul Viosys as opto-semiconductor technologies become increasingly important across automotive lighting, consumer electronics, displays and data communications.
In June 2025, the Unified Patent Court in Europe confirmed a permanent injunction involving products that infringed Seoul’s WICOP technology. The European order also required infringing products already sold to be recalled and destroyed, potentially increasing the commercial consequences for companies found to be using the technology without authorisation.
A U.S. court followed with another permanent injunction in February 2026 involving Laser Components USA. The case concerned products incorporating chips supplied by South Korean company Photon Wave. The order prohibits the sale of infringing products and substantially similar products manufactured using the same process. It also extends to relevant officers, employees, agents and parties acting in concert with the company.
The cases cover patents involving several technologies developed by Seoul Semiconductor and Seoul Viosys, including light-output enhancement, WICOP — a robust LED structure — and water-purification technology. Their applications range from automotive lighting and displays to mobile devices, general illumination and optical communications for AI infrastructure.
The companies said the technologies form part of a combined intellectual-property portfolio of about 15,000 patents.
The rulings come as the opto-semiconductor industry expands beyond traditional lighting applications. The sector, valued at roughly $200 billion according to market estimates cited by the companies, is increasingly connected to optical communications and other technologies supporting AI infrastructure.
For Seoul Semiconductor, the succession of injunctions across India, Europe and the U.S. represents a significant test of its ability to enforce patents across multiple jurisdictions. Permanent injunctions can have a more direct commercial impact than monetary damages because they can prevent continued sales and, in some jurisdictions, require products already in the market to be withdrawn.
Founder Chung hoon Lee said the company’s approach to patent protection reflects his broader view that intellectual-property systems should provide entrepreneurs with a fair opportunity to compete.
