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Cowan, Liebowitz & Latman PC

United States 2026

Overview

We maintain long-term relationships by providing highly responsive, personalized service with quality legal work and sound advice.

Since 1957 we have earned our international reputation as a leading intellectual property law firm. We have a deep bench of attorneys experienced in trademark, copyright and patent law who meet together weekly to discuss current issues, and who frequently meet with non-US colleagues.

An adjunct is our unusual practice in customs, international cargo and regulatory compliance law with an ancillary office near JFK International Airport. In addition, we have an active advertising law practice. We also have successfully represented clients in the areas of litigation, commercial and corporate law, real estate, trusts and estates and private client services.

Please visit our website at www.cll.com for more information.

Founded:
1957
Size:
42
Magnifying glass with star icon
Practice Areas:
7
Person outline with Best Lawyers logo
Best Lawyers Recognized:
13

Rankings

National

Tier
1
National Ranking
Copyright Law
Tier
1
National Ranking
Litigation - Patent
Tier
1
National Ranking
Trademark Law
Tier
2
National Ranking
Litigation - Intellectual Property

Regional

New York City

Tier
1
New York City
Copyright Law
Tier
1
New York City
Litigation - Intellectual Property
Tier
1
New York City
Litigation - Patent
Tier
1
New York City
Trademark Law
Tier
3
New York City
Commercial Litigation

Firm Leadership

Jonathan Z. King
Chair

Highlighted Client Comments

These featured testimonials reflect a sampling of client experiences. As every legal matter is unique—comments are personal opinions, not guarantees of future results.
Litigation - Intellectual Property
I have used Rich Dannay at Cowan Liebowitz for more than 30 years. He is one of the preeminent copyright lawyers in the country. And, unlike many IP attorneys, he knows how to litigate a case. I recommend him highly.
 
Trademark Law
The attorneys at this little gem of a boutique are the most intelligent and practical attorneys I've ever worked with in the trademark, copyright, trade secret, customs, music, IP litigation and patent areas. Cowan's partners excel at simplifying complicated legal issues, explaining to business people what really matters, what does not and understanding likely outcomes in difficult legal situations. These qualities also make them far and above the most cost effective IP lawyers I've used. On more than one occasion, switching to Cowan reduced my fees on "routine" IP work and headaches by more than 300%. These are "lawyers' lawyers," but my business people love them and often ask for them instead of other firms that they've worked with for years in the past. Bill Borchard, Lana Cohen, C.J. Ericson, Chris Jensen and Tom Kjellberg, to name a few there, are at the top of their field.
 

Rankings

National

Tier
1
National Ranking
Copyright Law
Tier
1
National Ranking
Litigation - Patent
Tier
1
National Ranking
Trademark Law
Tier
2
National Ranking
Litigation - Intellectual Property

Regional

New York City

Tier
1
New York City
Copyright Law
Tier
1
New York City
Litigation - Intellectual Property
Tier
1
New York City
Litigation - Patent
Tier
1
New York City
Trademark Law
Tier
3
New York City
Commercial Litigation

Practice Areas

Cowan, Liebowitz & Latman PC has been ranked by Best Law Firms for excellence in 5 specialties, reflecting the firm's commitment to delivering outstanding legal services.
Additionally, the firm provides services in these practice areas:
  • Copyright

    Copyright protection worldwide is a core practice of our Intellectual Property group. In addition to registering copyright claims and enforcing rights in various forms of media, our attorneys are pioneers in the significant new copyright challenges presented by the digital revolution.

    We counsel clients in all sectors of their businesses, including advertising, Internet, social media, computer software, technology, virtual and augmented reality. Our experience also covers the more traditional copyright industries, such as book and music publishing, sound recordings, broadcasting and entertainment. We regularly advise several motion picture companies on copyright clearance issues. We also frequently give opinions on copyrightability, fair use, infringement, ownership and title, security interests, and international protection strategies. When our clients need or offer copyright licenses, we negotiate essential terms.

    We are well-known for our copyright litigation expertise. In collaboration with our Litigation practice group, we enforce our clients' copyright interests and defend their legitimate rights to use the works of others in the courts and through alternative dispute resolution proceedings.

  • Customs

    For over 30 years, the attorneys in our Customs, International Cargo & Regulatory Compliance practice have been providing practical, creative solutions to cross-border and regulatory issues for importers, exporters, trade associations, freight forwarders, Customs brokers and other service providers large and small.

    With an emphasis on consumer products, we advise on all trade matters, whether originating inside or outside the United States. We regularly interact with U.S. government officials, at agency headquarters and locally, throughout the U.S. In addition, our attorneys have testified before Congress on pending and proposed legislative and administrative matters and appear in court on trade matters.

    We assist clients in establishing procedures to ensure compliance with the constantly changing regulations of the government agencies charged with ensuring the health, safety, and economic welfare of us all. These include the Consumer Product Safety Commission, U.S. Customs and Border Protection, Transportation Security Administration, Food and Drug Administration and the Fish and Wildlife Service. We also strive to give clients a competitive advantage by helping them to qualify for tariff and tax reductions in import and export markets, to develop a market access strategy and through other legal means.

  • Estate Administration

    Our Trusts and Estates practice was established during the early years of the firm to address issues concerning transfer of wealth of business executives, professionals, high net-worth individuals and the principals of our privately held business clients. Working as counselors and trusted advisors, we develop strategies that help our clients achieve their financial and personal objectives and provide for their families' needs through tax and succession planning.

    We approach this more personal area of practice with the same commitment as we do our other areas, combining sophisticated tax planning experience with sensitivity and practical solutions. Our focus is on preserving clients' assets, avoiding family acrimony and, where there are closely held or family-owned businesses, planning for management and ownership continuity and succession.

    We employ a wide range of estate and tax planning tools to ensure that our clients' objectives are accomplished, including wills, health care proxies, powers of attorney, generation skipping transfers, family limited partnerships, life insurance trusts, revocable and irrevocable trusts, as well as charitable and other gift-giving devices. We also provide trust and estate administration and tax preparation services. In the unfortunate event of contested proceedings, we handle litigation in collaboration with our Litigation practice group.

  • Intellectual Property

    Intellectual property has become a key asset of all types of business. Maximizing the value of intellectual property, whether trademarks, copyrights, patents, trade secrets, domain names or personal attributes, is more complex as commerce expands and globalization connects markets and users internationally.

    Whether in mergers, acquisitions, divestitures, licenses, consent agreements, or structuring intellectual property holding companies, our attorneys provide clients with strategic counsel on the best ways to structure intellectual property ownership to maintain valid rights, while at the same time maximizing value and satisfying business and tax requirements.  We work with clients seeking to use intellectual property as collateral for loans or securitizations, and in situations in which a trademark's use will be split between unrelated business entities. In instances where trademarks are subject to long-term licenses, we help clients avoid inadvertent losses due to bankruptcy disaffirmance.  We conduct audits of our clients' intellectual property rights and perform due diligence investigations regarding the intellectual property issues involved in acquisitions and in secured financing transactions. 

    In addition to being practitioners, our attorneys are respected teachers, authors and advisors who have served on committees that have drafted the current copyright, trademark and unfair competition laws. Because of our accumulated knowledge and experience in defining this changing area of the law, we approach problems from an advanced starting point. We do not have to learn at the client's expense.

  • Litigation

    Litigation is a way of resolving problems. It can be a tool for achieving a successful settlement, sometimes in combination with early dispute resolution. Or it can be the best means for redressing a wrong or establishing a principle.

    Attorneys in our Litigation practice group have extensive trial and appellate experience in state and federal courts and before administrative agencies in New York and throughout the United States. We also regularly represent clients in proceedings before the Trademark Trial and Appeal Board, in domain name arbitration actions before the World Intellectual Property Organization and the National Arbitration Forum, and in advertising disputes before the National Advertising Division by The Better Business Bureau. 

    Among the cases we litigate are matters involving general commercial law, false advertising, the Internet and e-commerce, trademarks, patents, copyrights, unfair competition, entertainment, employment, professional ethics, product liability, real estate, regulatory and taxation disputes, white-collar criminal defense, military justice, matrimonial, family and estate matters.

    Our approach is to be as persuasive and efficient as possible. We focus on decisive issues and avoid overstaffing cases. When appropriate, we have the resources of paraprofessionals and sophisticated legal support technology to assist us.

    Of course, we always look for early dispute resolution opportunities.  Members of the firm have represented our clients in mediation and arbitration proceedings.  They also act as mediators and arbitrators in cases for the U.S. District Court for the Eastern District of New York (E.D.N.Y.), the National Association of Securities Dealers (NASD), the International Institute for Conflict Prevention & Resolution (CPR), the International Trademark Association (INTA), and the American Arbitration Association (AAA).

  • Patent

    Patent law is a key part of our Intellectual Property practice. Members of our Patent Group have scientific and technical backgrounds in electronics, electrical and mechanical engineering; computer hardware and software; and organic chemistry and materials science. We concentrate on complex computer-related inventions; electrical, mechanical and electro-mechanical devices; Internet-related systems and software; biotechnology; business method patents; and design patents. We advise clients on a wide range of domestic and international patents, trade secrets, e-commerce, and infringement issues, as well as transactional matters. In addition, when our clients want to take their inventions to market, we advise on their advertising and marketing campaigns and collateral contracts. When litigation is necessary, our patent attorneys and our Litigation group join forces to form a formidable team enforcing and defending infringement claims.

    The experience of our patent attorneys includes the following technologies:

    • digital signal processing, including compression and encryption technologies;
    • digital and radio transmission systems;
    • audience measurement methodologies and systems;
    • medical devices and medical electronic systems;
    • surveillance markers and systems;
    • image recognition;
    • artificial intelligence;
    • object-oriented programs;
    • fuel cells;
    • pharmaceuticals and disease treatment;
    • biomarkers;
    • digital, film and video cameras;
    • optics;
    • lasers;
    • holographic storage;
    • methods of doing business; and
    • footwear function and design.

    We obtain patents and enforce and defend patent litigation nationwide. In addition, we:

    • provide patent infringement, validity and availability opinions;
    • counsel clients regarding trade secrets and design patent protection;
    • design and build domestic and international patent portfolios;
    • plan strategies for establishing and countering competitive patent positions;
    • make IP due diligence investigations;
    • draft agreements for the domestic and international transfer of technology, including non-disclosure agreements, material transfer agreements, and research collaboration agreements;
    • structure intellectual property holding companies;
    • advise on the maintenance of patent assets consistent with corporate budgeting and tax requirements;
    • prepare and negotiate employment agreements and patent assignments, licenses and security interests; and
    • conduct audits of patent and other IP rights.

    We maintain a computerized patent record-keeping system that assists in managing client patent portfolios efficiently and cost effectively.

    The proliferation of computers, e-commerce and the Internet have heightened the importance of patents for hardware and software-related products. Our Patent attorneys have been involved in Internet and computer-related patents for more than two decades.

    Whether for components of computer hardware or for applications software, we have the expertise, knowledge and contacts to help our clients protect their patents and intellectual property in today's marketplace. We have extensive experience in the preparation and prosecution of patent applications, protecting complex computer-related inventions before the U.S. and other patent offices. We work with a wide variety of computer and electronic technologies including financial software products, artificial intelligence, object-oriented programming, digital transmission systems (networks), image recognition and diverse application programs. We are also experienced in conducting infringement and validity studies of patents for various electronic technologies, particularly for the Internet.

    Our Patent attorneys also have extensive experience working with the rapidly evolving biotechnology industry.  From small-molecule drugs to diagnostic methods and methods of disease treatment, we assist both established and start-up companies in protecting their intellectual property with domestic and international patents.  We also represent clients in complex transactional matters, providing the guidance companies need to efficiently and effectively negotiate agreements that fuel their future success.

  • Trademark

    The scope of our trademark work is broad. We counsel clients from diverse industries on matters including evaluating the strength of proposed names and marks, clearing and registering marks, properly using marks for goods, services, using marks in advertising, campaigns, protecting trademarks in social media, managing trademark portfolios worldwide, anti-counterfeiting, trademark and domain name enforcement, recordation of trademarks with U.S. Customs & Border Protection (CBP), and litigation. Our trademark attorneys practice before the United States Patent and Trademark Office (USPTO), the U.S. Trademark Trial and Appeal Board (TTAB), the United States International Trade Commission (ITC), Uniform Domain-Name Dispute-Resolution Policy (UDRP) service providers, and in courts of general jurisdiction. In addition, we support our clients in negotiating licenses, consent and coexistence agreements, assignments, purchases and sales, conducting intellectual property audits and due diligence investigations as well as developing ownership structures to permit shared uses of the same trademark. 

    Our large Trademark Group has unusual depth which allows us to have work done by paraprofessionals in appropriate circumstances. Staffed by experienced trademark administrators knowledgeable in U.S. and international trademark practice, our trademark administration department manages more than 30,000 trademark records and cost effectively administers international registration programs. In conjunction with our carefully selected network of correspondents in virtually every country, our trademark practice effectively handles our clients' needs around the world.

Individuals Recognized in The Best Lawyers in America®

Cowan, Liebowitz & Latman PC proudly has 13 lawyers recognized for their outstanding professional performance in the 2026 edition of The Best Lawyers in America®. This peer-reviewed honor highlights individual excellence and directly qualifies the firm for consideration in the prestigious Best Law Firms rankings. For over four decades, Best Lawyers has been the gold standard for recognizing top legal talent, serving as the cornerstone for Best Law Firms awards. Learn more about our rigorous Best Lawyers research and selection process.
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Client Comments

A strong relationship between a client and their law firm is key to achieving the best possible outcomes. Open communication, trust, and collaboration ensure that attorneys understand each client’s unique goals and needs. Choosing the right firm means finding a team with the experience, knowledge, and dedication to guide you through every stage of the legal process.
Client comments reflect personal opinions and individual experiences. Every case is different, and outcomes depend on specific facts and circumstances. Past results and testimonials do not guarantee similar outcomes in future matters. For personalized legal advice, consult directly with an experienced attorney who can evaluate your specific situation and provide tailored guidance.
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Awards

Cowan, Liebowitz & Latman PC is honored to be recognized for excellence by Best Law Firms and other leading legal industry organizations. Our rankings and awards reflect the dedication, skill, and results our attorneys deliver across a wide range of practice areas. In addition to our Best Law Firms awards, Cowan, Liebowitz & Latman PC has earned accolades from respected national and regional publications for outstanding legal service and professional achievement. Explore our awards below to learn more about how Cowan, Liebowitz & Latman PC continues to set the standard for quality legal representation.
Chambers USA
Legal 500
World Trademark Review 1000 -The World’s Leading Trademark Professionals
World Trademark Review Global Leaders
Managing Intellectual Property IP Stars
Lexology Index
Super Lawyers New York Metro

Significant Matters

We succeeded in having two of our clients' trademarks declared to be "famous marks" by the US Trademark Trial and Appeal Board:

  1. Major League Baseball's marks WORLD SERIES (Opposition No. 91200934) and MAJOR LEAGUE BASEBALL (Cancellation No. 92060903).
  2. ESRT Empire State Building's mark EMPIRE STATE BUILDING IMAGE (Opposition No. 91204122).

The TTAB also decided that the designations 1.0, 1.25 and 1.5 in plain or stylized letters are generic for cigarette rolling papers and could be freely used by our client. (Opposition No. 9158276).

Our decision from the Sixth Circuit Court of Appeals that the graphic designs on our client's cheerleading uniforms is copyrightable was affirmed by the US Supreme Court.

We succeeded in having the Southern District of New York dismiss alleged copyright infringement claims as to 38 stock photographic images.

We defeated a preliminary injunction motion in the Southern District of New York by the owners of The Cotton Club nightclub in New York seeking to prevent the title of New York City Center's musical "Cotton Club Parade."

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