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Getting a cease and desist letter accusing your business of trademark infringement hits hard — especially when you’ve spent years building something real in West Covina, Los Angeles, Anaheim, or anywhere else across Southern California. Here’s what you need to hear right now: don’t ignore it, and don’t panic. What you do in the next few days matters enormously. This could stay a manageable legal issue — or escalate into full-blown litigation. Business owners and entrepreneurs throughout Los Angeles County, Orange County, San Bernardino County, and Riverside County deal with these letters more often than you’d expect. With the right legal team in your corner, many of these situations never see the inside of a courtroom.
What Is a Trademark Cease and Desist Letter?
A trademark cease and desist letter — or C&D — is a formal written demand, usually from a trademark owner or their attorney, telling you to stop using a name, logo, slogan, or other mark they claim infringes on their trademark rights. It’s not a lawsuit. But don’t let that fool you — it’s a serious legal notice with real consequences if you sit on it. Under federal law, trademarks are protected by the Lanham Act (15 U.S.C. § 1051 et seq.), which gives trademark owners the right to pursue you in court. The USPTO’s registration system creates nationwide constructive notice — meaning even if you’d never heard of a competing mark when you launched your business, you could still face liability. In 2026, trademark filings and oppositions are at record levels. Brand conflicts are increasingly common, especially in competitive markets like Greater Los Angeles and the Inland Empire. This isn’t a distant risk. It’s happening to businesses like yours right now.
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A C&D letter typically demands that you: (1) immediately stop using the disputed mark; (2) destroy or recall any infringing materials; (3) provide written confirmation of your compliance; and sometimes (4) pay monetary damages or transfer a domain name. The letter usually sets a response deadline — often 10 to 30 days.
How This Affects Business Owners in Southern California
For small business owners and entrepreneurs in cities like Ontario, Pomona, Riverside, San Bernardino, and throughout the Los Angeles metro area, a trademark C&D letter can threaten everything you’ve worked to build. Your brand is one of your most valuable business assets — it’s on your storefront, your website, your social media, your packaging, and your advertising. Being forced to rebrand overnight can mean significant financial losses, customer confusion, and reputational damage.
The stakes are especially high for:
- E-commerce businesses that sell nationally and may be infringing on federally registered marks without realizing it
- Brick-and-mortar retailers and restaurants in competitive Southern California markets where similar business names are common
- Startups and new businesses that skipped a trademark clearance search before launching
- Franchise operators and licensees whose branding choices may create liability for multiple parties
- Social media influencers and content creators whose brand identities are their primary business asset
Importantly, receiving a C&D letter does not automatically mean you are guilty of infringement. There are numerous valid defenses available, including fair use, geographic limitations on trademark protection, likelihood of confusion analysis, priority of use, and challenges to the validity of the sender’s trademark registration itself. An experienced trademark attorney can evaluate these defenses quickly.
What You Should Do Now: Actionable Steps
If you’ve received a trademark cease and desist letter, follow these steps immediately:
- Do not respond on your own — yet. Anything you say in a response letter can be used against you in future litigation. Resist the urge to fire off an emotional reply or, worse, to simply ignore the letter.
- Note the response deadline. Most C&D letters give you a short window to respond. Missing this deadline can result in the sender filing a lawsuit without further warning. Contact an attorney the same day or the next business day.
- Gather your evidence of use. Collect documentation showing when you first began using your mark — receipts, invoices, social media posts, domain registration records, business filings, and marketing materials. This evidence can be critical in establishing priority of use.
- Do not destroy anything. Once you receive a C&D letter, you have a legal preservation obligation. Do not delete social media posts, emails, or business records related to your brand or the dispute.
- Have an attorney conduct a trademark clearance analysis. Your attorney will search the USPTO trademark database, review common law rights, and assess the strength of both your mark and the sender’s mark to determine the realistic risk you face.
- Evaluate your options strategically. Depending on the analysis, your options may include: negotiating a coexistence agreement, obtaining a license to continue using your mark, challenging the validity of the sender’s trademark at the USPTO’s Trademark Trial and Appeal Board (TTAB), modifying your mark to reduce the likelihood of confusion, or — if you have strong defenses — sending a firm response letter that contests the claims.
- Consider filing your own trademark application. If you don’t already have a federal trademark registration for your mark, filing an application with the USPTO now can strengthen your legal position and demonstrate good faith.
Remember: responding professionally, promptly, and strategically through qualified legal counsel often leads to negotiated resolutions — saving your business from costly litigation.
Why Choose Tez Law P.C. for Trademark Matters in Southern California
At Tez Law P.C., headquartered in West Covina and serving clients throughout Los Angeles County, Orange County, San Bernardino County, and Riverside County, we understand what’s at stake when your brand is under attack. Managing Attorney JJ Zhang (California Bar #326666) provides strategic, results-oriented trademark representation for businesses of all sizes — from solo entrepreneurs to established companies.
Our trademark legal services include:
- Comprehensive review and response to cease and desist letters
- Trademark clearance searches and risk assessments
- USPTO trademark application filing and prosecution
- TTAB opposition and cancellation proceedings
- Trademark licensing and coexistence agreements
- Trademark infringement litigation in federal court
We serve the full Southern California business community, including clients in Los Angeles, Anaheim, Riverside, San Bernardino, Ontario, Pomona, West Covina, and surrounding communities. We also assist clients with business formation, contracts, and other legal needs. While our primary focus is business and IP law, our firm also handles immigration services and works alongside trusted referral partners for matters such as personal injury attorney representation.
We offer practical, plain-language counsel — because we believe every business owner deserves to understand their legal rights, not just receive confusing legal jargon.
Frequently Asked Questions
Do I have to comply with a cease and desist letter for trademark infringement?
Not necessarily. A C&D letter is a demand, not a court order. However, ignoring it is rarely a good strategy. An experienced trademark attorney can evaluate whether the claims have legal merit, identify available defenses, and craft a response that protects your rights without unnecessarily escalating the dispute. In some cases, you may have strong grounds to contest the claims entirely.
How much does it cost to respond to a trademark cease and desist letter in California?
The cost depends on the complexity of the dispute, the strength of the opposing party’s trademark rights, and the response strategy involved. At Tez Law P.C., we offer transparent fee arrangements and begin every new trademark matter with a free consultation so you understand your options and costs upfront before committing to any course of action.
What happens if I ignore a trademark cease and desist letter?
Ignoring a C&D letter can have serious consequences. The trademark owner may file a federal lawsuit against you, seek an injunction forcing you to immediately stop using your mark, and pursue damages — including the other party’s lost profits, your profits from infringing use, and in willful infringement cases, up to three times the actual damages plus attorney’s fees under the Lanham Act. Acting quickly and strategically is always better than doing nothing.
If your Southern California business has received a trademark cease and desist letter, the time to act is now. At Tez Law P.C. in West Covina, we are ready to review your situation, explain your options, and fight to protect everything you’ve built. Contact us today to schedule your free consultation with Attorney JJ Zhang and take the first step toward resolving your trademark dispute with confidence.
Disclaimer: This article is for informational purposes only and does not constitute legal advice. Contact Tez Law P.C. at 626-678-8677 or [email protected] for advice specific to your situation. Results may vary.