Occusense Sues Joinin International Over an Outdoor Solar Decorative Lights Patent.

The complaint

The case is Occusense LLC v. Joinin International Technology Company Limited, No. 4:26-cv-01103 (N.D. Tex., Fort Worth Division), a five page complaint for patent infringement filed September 8, 2026, ECF No. 1, with the patent and a claim chart attached as exhibits. The docket lists Judge Mark T. Pittman as the assigned judge. The complaint describes Occusense as a New Mexico corporation based in Albuquerque, and Joinin as a Texas corporation with an established place of business in Grapevine, Texas. It pleads venue under 28 U.S.C. 1400(b).

What the patent covers

U.S. Patent 7,819,545, Outdoor Solar Decorative Lights, issued October 26, 2010; the complaint says the application was filed July 14, 2008. Claim 1 covers an outdoor decorative solar powered lighting system with a flexible light string carrying a wire, evenly spaced sockets each holding a bulb, a solar collector connected to the string with a housing, at least one solar panel, and a rechargeable battery, and a regulator switch that keeps the bulbs off from sunrise to sunset and automatically closes the circuit to light them at sunset. The complaint alleges Occusense is the assignee of all right, title, and interest in the patent.

The accused products

The complaint alleges that Joinin has directly infringed and continues to infringe by making, using, offering to sell, selling, and importing the products identified in its claim chart, and by having its employees internally test and use them. The chart, Exhibit 2, compares claim 1 with KYY Solar String Lights, citing an Amazon product listing. The complaint alleges, on information and belief, that numerous other infringing devices have been made, used, sold, imported, and offered for sale by Joinin or its customers, and that Joinin continues to sell the products and distribute materials that induce end users to infringe. It alleges induced infringement from at least service of the complaint.

The relief sought

Occusense asks for judgments that the patent is valid and enforceable and that Joinin infringed it directly and indirectly, an accounting, damages under 35 U.S.C. 284 with interest and costs, and, if necessary, a finding that the case is exceptional under 35 U.S.C. 285 with attorneys' fees. It demands a jury trial.

What to watch next

The docket shows a request for issuance of a summons to Joinin on September 8, 2026. Watch for service, then an answer or Rule 12 motion. The case can end at any time, including by settlement or voluntary dismissal.