NYC INTELLECTUAL PROPERTY LAW FIRM

Davidson, Davidson & Kappel, LLC ("DDK") is a New York City Intellectual Property Law Firm specializing in all aspects of intellectual property including patents, trademarks, copyrights, trade secrets, and unfair competition.

Midtown Manhattan Street View from DDK Office Window

DDK provides legal services to develop, secure and protect the U.S. intellectual property assets, including patents, trademarks and copyrights, of a wide variety of domestic and foreign clients, extending from individual inventors, venture capitalists, start-ups, and emerging companies to universities, research institutions, large private companies and international corporations.

DDK drafts and prosecutes patent applications; counsels on the scope and validity of patents and trademarks; conducts due diligence reviews; renders patent landscape and freedom to operate opinions; counsels on transfers of intellectual property assets; advises on new product launches; calculates patent term extensions, and enforces, challenges and defends patents and trademarks through litigation, licensing and other strategies.

In addition, DDK counsels on the development of branded generic formulations and generic pharmaceutical formulations subject to Abbreviated New Drug Applications (ANDA) and assists with filings with the United States Food & Drug Administration (U.S. FDA), evaluates proposed formulations and method of treatment claims with respect to the U.S. FDA Orange Book listings; and drafts paragraph IV notice letters for ANDA filings.

Through its long-standing working relationships with intellectual property law firms throughout the world, DDK assists its clients in attaining and protecting their intellectual property assets throughout the world.

DDK’s offices are in the Time Square South section of mid-town Manhattan.

Practice Areas

PATENT PROCUREMENT

PATENT PROCUREMENT

Drafting, filing & prosecuting patent applications in the U.S. & facilitating worldwide protection

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PATENT POST-GRANT PROCEEDINGS

PATENT POST-GRANT PROCEEDINGS

Defending and attacking granted patents within the USPTO

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PATENT OPINIONS

PATENT OPINIONS

Preparing freedom to operate, infringement, invalidity & patentability opinions

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LITIGATION

LITIGATION

Litigating intellectual property cases for plaintiffs and defendants

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TRADEMARKS

TRADEMARKS

Working in all phases of U.S. and foreign trademark practice, including prosecution, licensing, due diligence and litigation

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TECH TRANSFERS/IPOs

TECH TRANSFERS/IPOs

Advising and assisting our clients in acquiring, licensing and selling of all intellectual property

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Pharma
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Chemical
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Biotech
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Mechanical
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Electrical
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Computer

Attorneys

Clifford Davidson Profile

Clifford M. Davidson

Partner
Leslye Davidson Profile

Leslye B. Davidson

Partner
Cary Kappel Profile

Cary S. Kappel

Partner
William Gehris Profile

William C. Gehris

Partner
Oleg Ioselevich Profile

Oleg Ioselevich

Partner
Jennifer O'Connell Profile

Jennifer L. O'Connell

Partner
Clint Mehall Profile

Clint Mehall

Partner
David Petroff Profile

David Petroff

Of Counsel
Simon Steiner Profile

Simon C. Steiner

Associate
Simon Steiner Profile

Alyssa D'Antonio

Associate

Recruiting

New Associates

DDK takes pride in the training and development of new associates. We offer an exciting and varied intellectual property practice in a dynamic firm atmosphere.

Summer Associates / Legal Interns

We seek qualified attorneys to grow with us. In some cases, we hire summer associates and legal interns.

Administration

We offer an exciting and varied intellectual property practice in a dynamic firm atmosphere. We seek qualified staff to grow with us.

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Contact Us

DAVIDSON, DAVIDSON & KAPPEL, LLC
General Contact

+1 (212) 736-1940
ddk@ddkpatent.com

Our Office

589 Eighth Avenue,
16th Floor
New York, NY 10018
USA