Trademark Litigation Attorney
Trademark Trial and Appeal Board (TTAB) Expert

Strategic Trademark Counsel for Founders, Brands, and Their General Counsel

When your brand name, logo, or tagline is under attack, or you need to stop someone else from encroaching on your trademark, you don’t just need a filing lawyer. You need a strategist.

At L.A. Tech and Media Law Firm, we help founders, brand owners, and their counsel navigate trademark disputes and Trademark Trial and Appeal Board (TTAB) proceedings with a clear, business-focused plan: when to fight, when to settle, and when to cut losses and pivot.

Nationwide USPTO/TTAB representation: We represent trademark owners and applicants across the United States in TTAB opposition and cancellation proceedings. Federal and state court representation is subject to applicable admissions and authorization.

Received a TTAB opposition or cancellation complaint? Use our secure contact form to provide the proceeding number and upcoming response deadline. Please do not submit confidential case materials until a conflicts check is completed.

Who We Represent

We regularly advise:

• Founders and business owners whose trademarks are facing an opposition, cancellation, or other legal challenge

• Companies considering filing oppositions or cancellations against competitors or confusingly similar marks

• Businesses facing cease & desist letters, rebrand pressure, or threats of litigation

• Law firms and litigators who want a TTAB / trademark expert as co-counsel or behind-the-scenes strategist

If you’re in the middle of a trademark fight, or see one coming, this is where we step in.

Common Situations

You may be here because:

• You received a Notice of Opposition or Petition to Cancel from the TTAB.

• Your application drew a conflict with another registrant, and you’re staring at legal documents you don’t fully understand.

• A competitor’s mark is too close to your brand, and you want to know whether to challenge or coexist.

• Another party is demanding that you rebrand or abandon your application or registration.

• A client has a trademark dispute, and you want to bring in a expert without losing control of the relationship.

Whatever the scenario, you need a seasoned TTAB and trademark lawyer to tell you what your real options are and what each path is likely to cost.

Why Work With Us

As a national recognized trademark litigation expert, I’ve focused on technology, branding, and innovation law for nearly two decades.

• 18+ years in technology and IP practice

• Lead counsel in dozens of TTAB proceedings (oppositions, cancellations, priority disputes)

• Attorney of record on hundreds of USPTO trademarks, across startups, DTC brands, and established companies

• Commissioned by LexisNexis to author an advanced practitioner guide on TTAB practice and trademark disputes

• Quoted by major media, including The Wall Street Journal and CBS News, and recognized among the Top 30 New Media & E-Commerce Attorneys by the Los Angeles Business Journal

• Battle-Tested Expertise: 65+ Cases Against Industry Giants. Our reputation is built on results. David Nima Sharifi has served as lead counsel in over 62 trademark and IP litigation cases, successfully navigating high-stakes disputes against some of the most powerful organizations in the world, including:

• Google
• Amazon
• John Deere
• National Hockey League (NHL)
• National Football League (NFL)
• Major League Baseball (MLB)
• United States Polo Association

See our entire case history in the United States Patent and Trademark Office Trademark Trial and Appeal Board TTAB case search records. We don’t treat trademark disputes as mere procedural exercises. We approach them as business and brand decisions with real financial impact. That means:

• No rote, template-driven responses

• A focus on leverage, negotiation posture, and long-term brand strategy

• Early, candid conversations about costs, risks, and timelines

How We Work Together