Trademark Lawyer for Orange County Small Businesses

Last updated: October 2026

Kolmogorov Law, P.C. is an Irvine business litigation firm that handles trademark disputes for small and mid-size companies in Orange County. We stop competitors who copy a business's name, logo, or packaging, and we defend Orange County businesses that receive a cease and desist letter from a larger brand. Federal trademark cases for Orange County companies are filed at the Ronald Reagan Federal Building in Santa Ana. State claims go to Orange County Superior Court. Founder Pavel Kolmogorov (State Bar No. 321018) handles these matters personally.

Call (909) 235-6116 or contact us online to discuss a trademark problem.

The trademark problems Orange County small businesses bring us

Most of the trademark calls I get from Orange County owners fall into four groups.

A competitor opens under a confusingly similar name. A restaurant in Costa Mesa, a dental practice in Mission Viejo, a landscaping company in Anaheim. The second business picks a name close enough that customers call the wrong number, and reviews start landing on the wrong listing.

A former partner or employee leaves and takes the brand with them. They register the domain, set up the social accounts, or file a trademark application in their own name while the business is still operating under the mark.

An online seller copies the product. Knock-offs appear on Amazon, Etsy, or a marketplace storefront, often using the company's own product photographs.

A letter arrives from a larger company. It demands that the business stop using its name within ten days and threatens a federal lawsuit. The owner has used the name for years and does not know whether the threat is real.

Each of these has a different answer. The answer depends on facts most owners have never thought about: when the name was first used, whether it was registered, and what the agreements with the designer, the partner, or the marketplace say.

You do not need a registration to have rights, but it helps

Many Orange County small businesses never registered their marks. That does not leave them without protection. Section 43(a) of the Lanham Act protects unregistered marks and trade dress against uses likely to confuse consumers about source, sponsorship, or affiliation. (15 U.S.C. § 1125(a)(1).) A registered mark gets the added protection of section 32, which reaches any reproduction, counterfeit, copy, or colorable imitation used in commerce in a way likely to cause confusion. (15 U.S.C. § 1114(1).) California separately protects marks registered with the Secretary of State. (Bus. & Prof. Code, § 14245.)

In practice the question in nearly every case is whether consumers are likely to be confused. Courts in the Ninth Circuit, which covers Orange County, weigh eight factors. They look at the strength of the mark, how close the goods or services are, how similar the marks look and sound, and evidence of actual confusion. They also look at the marketing channels, how careful buyers are, the defendant's intent, and the likelihood that either business expands into the other's line. (AMF Inc. v. Sleekcraft Boats (9th Cir. 1979) 599 F.2d 341, 348-349.) For a local service business the evidence that matters most is usually simple. Misdirected calls. Reviews posted to the wrong listing. Customers who showed up at the wrong location. We ask owners to start logging those incidents the day they call.

What a trademark case costs a small business, and how we keep it in proportion

A trademark dispute is worth pursuing only if the remedy is worth more than the fight. For a small business the remedy that usually matters is the injunction, an order that the other side stop. A plaintiff who shows a likelihood of success on the merits gets a rebuttable presumption of irreparable harm on a motion for a temporary restraining order or preliminary injunction, which makes early relief realistic. (15 U.S.C. § 1116(a).) Money follows if the case warrants it. A prevailing plaintiff may recover the defendant's profits, its own damages, and costs, and the court may award attorney's fees in exceptional cases. (15 U.S.C. § 1117(a).) Where the goods are counterfeit, the owner may instead elect statutory damages. (15 U.S.C. § 1117(c).)

Most of the small-business trademark matters we handle never reach a courtroom. A demand letter that attaches the registration, documents the first-use dates, and lays out the confusion evidence resolves a large share of them. When the other side is a marketplace seller, the platform's own takedown process is often the fastest tool, and we use it before anything else. Fees are discussed at the first meeting. Our guide to the cost of business litigation explains hourly, flat, and hybrid arrangements.

If you received a cease and desist letter

Do not ignore it, and do not rebrand the next morning either. Some letters from larger companies overreach. A descriptive term, a name used in an unrelated line of business, or a mark the sender stopped using years ago may not support the claim. The defenses include no likelihood of confusion, descriptive or nominative fair use, prior use, abandonment, and unreasonable delay. (Jarrow Formulas, Inc. v. Nutrition Now, Inc. (9th Cir. 2002) 304 F.3d 829, 836 [laches].) Other letters are well founded, and a rebrand now costs far less than a rebrand after two years of litigation. We read the letter, run your adoption history, and give you a straight answer about which situation you are in. In the right case, a company that receives a demand can file first in Santa Ana for a declaration that it does not infringe. That fixes the forum and the timetable.

Where Orange County trademark cases are heard

Federal trademark claims for Orange County businesses are filed in the Southern Division of the Central District of California, at the Ronald Reagan Federal Building and United States Courthouse in Santa Ana. State-law claims, including California trademark claims and unfair competition claims under Business and Professions Code section 17200, can be filed in Orange County Superior Court at the Central Justice Center, 700 Civic Center Drive West, Santa Ana. Lanham Act claims may be brought in either court. Copyright claims must go to federal court. (28 U.S.C. § 1338(a).) Our office at 327 Magnet in Irvine is a short drive from both courthouses, and we appear in each of them.

What to bring to the first meeting

Bring whatever shows when you first used the name or logo: early invoices, the first version of the website, packaging, signage photographs, the business license, and the fictitious business name filing. Bring any registration certificates or application numbers, state or federal, and the agreement with whoever designed the logo. If the dispute is with a former partner or employee, bring the operating agreement or employment agreement and any emails about who owns the brand. If you received a demand letter, bring the letter, the sender's registration if one is cited, and any clearance search you ran before choosing the name. Dated screenshots of the other side's use and a log of misdirected calls or reviews complete the file.

Frequently asked questions

Can I sue over my business name if I never registered it?

Often, yes. Section 43(a) of the Lanham Act protects unregistered marks that identify your goods or services, and the confusion analysis is the same as for a registered mark. (15 U.S.C. § 1125(a)(1).) You will need to prove that you used the name first and that customers associate it with your business. Registration makes both points easier to establish, and a California registration adds state remedies.

Should a small Orange County business register in California or with the federal trademark office?

It depends on where the business sells and where it plans to grow. A federal registration protects the mark across the country. A California registration is narrower but adds state remedies, including enhanced damages against counterfeiters and a presumption of knowing infringement once a proper demand has been sent. (Bus. & Prof. Code, §§ 14245, 14250.) A business that serves only Orange County customers today may still want the federal registration if it expects to franchise or sell online.

How quickly can you stop a copycat?

In urgent cases we apply for a temporary restraining order, which a court can hear within days. A preliminary injunction motion follows on a longer schedule. Most matters move faster through a documented demand letter or a marketplace takedown, and we start there unless the harm cannot wait.

Do you handle trademark applications?

Our practice is litigation. Where a registration is needed as part of an enforcement plan, we handle it in that context. For the filing process itself, see our guide to trademark registration.

Talk to an Orange County trademark lawyer

If a competitor is using your name, a former partner is claiming your brand, or a demand letter has arrived, call Kolmogorov Law, P.C. at (909) 235-6116 or use our contact page. Our office is at 327 Magnet, Irvine, CA 92618. For the full scope of our trademark, copyright, and trade secret work across California, see our intellectual property litigation page. For other Orange County business disputes, see our Orange County business litigation page.

This page provides general information about federal and California trademark law and is not legal advice. Trademark disputes turn on the dates of first use, the registrations, and the specific facts.