What was filed

The complaint is Document 1, filed October 26, 2026, in the U.S. District Court for the Central District of California. The case is Hillstone Law, PC v. Hillstone Partners Insurance Agency LLC et al., No. 2:26-cv-12503. It runs 13 pages. The plaintiff is Hillstone Law, PC, a California professional corporation with its principal place of business in Los Angeles, California. The named defendant is Hillstone Partners Insurance Agency LLC, which the complaint alleges on information and belief does business from Encino, California, and offers commercial insurance brokerage and related services, including through hillstoneinsurance.com. Does 1 through 10 are also named. The complaint is signed by Omid E. Khalifeh of Omni Legal Group in Los Angeles and also lists Ariana Santoro, Lara A.P. Murphy, and Louise Jillian Paris. Hillstone Law demands a jury.

The HILLSTONE LAW mark

The complaint says Hillstone Law has continuously used HILLSTONE LAW in commerce for legal services since at least 2015, filed U.S. Trademark Application Serial No. 99624987 on January 30, 2026, for "Legal services; Attorney services" in International Class 45, and obtained U.S. Registration No. 8,467,645 on September 29, 2026. USPTO TSDR lists Hillstone Law, PC as owner, shows the registration as live on the Principal Register, with a disclaimer of "Law," first use claimed as of January 1, 2015, and registration dated September 29, 2026. Trademark Trial and Appeal Board records show that on July 29, 2026, the Board granted Hillstone Partners Insurance Agency LLC, as a potential opposer, an extension of time until August 29, 2026, to oppose the HILLSTONE LAW application.

What the complaint alleges

The complaint alleges that Hillstone Partners uses HILLSTONE PARTNERS INSURANCE AGENCY and related HILLSTONE-formative branding for insurance brokerage services, and that on March 20, 2026, it filed U.S. Trademark Application Serial No. 99715029 in connection with insurance services. USPTO TSDR shows that application, for HILLSTONE PARTNERS INSURANCE AGENCY in International Class 36 for insurance brokerage and related insurance services, owned by Hillstone Partners Insurance Agency LLC, claims first use of January 1, 2025, and was published for opposition on October 6, 2026. The complaint alleges that HILLSTONE is the dominant shared term, that the parties offer complementary professional services in the Los Angeles area through overlapping online channels, and that third parties have actually confused the businesses. It says Hillstone Law sent cease-and-desist letters on February 9 and April 28, 2026, that the brokerage's counsel responded on February 24, 2026, disputing confusion, and that, on information and belief, the challenged use continued after notice and is intentional and willful or in conscious disregard of Hillstone Law's rights.

Claims and relief requested

Hillstone Law brings three claims against all defendants: federal trademark infringement under 15 U.S.C. § 1114; false designation of origin and unfair competition under 15 U.S.C. § 1125(a); and California common-law trademark infringement and unfair competition. The prayer asks for a declaration that the accused use is likely to cause confusion; a preliminary and permanent injunction against using the Infringing Marks or confusingly similar branding, against inducing a mistaken belief of affiliation, requiring removal of the branding from websites and marketing materials, and against unfair competition; delivery for destruction or disposition of materials bearing the Infringing Marks; a sworn compliance report within 30 days of any injunction; an accounting of profits and an award of profits, damages, and costs under 15 U.S.C. § 1117; enhanced monetary relief upon proof of willful infringement; attorneys' fees under 15 U.S.C. § 1117(a) if the case is exceptional; prejudgment and post-judgment interest; and other just relief.