Gregory L. Diskant

USA: New York

Patterson Belknap Webb & Tyler
1133 Avenue of the Americas
New York

Tel: 212-336-2710
Fax: 212-336-2222


Gregory Diskant is a senior litigation partner at Patterson Belknap, where he served as chair from 1997-2007. As part of his active trial practice, Mr. Diskant regularly tries cases in federal and state courts and before arbitration panels, focusing on complex commercial and intellectual property litigation. He has secured billions of dollars in judgments and settlements for his clients, with multiple verdicts greater than $100 million. In jury trials around the country, Mr. Diskant has successfully represented both plaintiffs and defendants. Two of his jury victories for plaintiffs were cited as major plaintiff’s verdicts of the year; two of his jury wins for defendants were cited as major defendant’s verdicts of the year.

Most recently, in August 2014, he won judgments of validity and infringement against two generic challengers to a blockbuster pharmaceutical. In April 2013, he obtained the complete reversal and dismissal of a $600 million judgment in a patent case involving coronary stents. In May 2012, he won a defendant’s jury verdict defeating a $500 million patent infringement claim involving the market’s leading contact lenses. In April 2011, he obtained a multi-billion settlement resolving distribution rights to a pharmaceutical. In February 2010, he obtained a settlement in a series of patent cases of $1.7 billion, the largest patent settlement ever.

Prior to joining Patterson Belknap Mr. Diskant served as Assistant United States Attorney and as Chief Appellate Attorney for the Southern District of New York. He also served as a Law Clerk to the Hon. Thurgood Marshall, Supreme Court of the United States and the Hon. J. Skelly Wright, U.S. Court of Appeals for the District of Columbia Circuit.

Patterson Belknap has litigated “bet-the-company” patent disputes for decades. We represent clients in some of the most notable patent cases in the country. As described below, in 2010 we secured a settlement of $1.725 billion, the largest settlement ever of a patent infringement case in the United States on behalf of a Fortune 50 client.

We are ranked among the top firms in New York for patent litigation by Chambers USA: America’s Leading Lawyers for Business. The guide notes, “this team of attorneys combines exceptional scientific knowledge with terrific skills.” Our team “receives the most widespread acknowledgement for its performance in high stakes patent litigation.”

Many of our attorneys have scientific and technical backgrounds and varied industry experience, including in such diverse fields as chemistry, biochemistry, biology, biotechnology, statistics, mathematics, and chemical, nuclear and electrical engineering. This experience enables the firm to represent clients not only in patent infringement litigation but also in complex reexamination and interference proceedings before the U.S. Patent & Trademark Office. In addition, we negotiate patent licenses and sales and provide opinions concerning patent validity and infringement. Our willingness to go to trial (when in the client’s interest), and ability to assess realistically the strengths of a case, not only serve our clients in court but also can increase the chances for a favorable outcome.

Founded in 1919, Patterson Belknap is a law firm of over 200 lawyers committed to providing high quality legal advice and service to clients and to maintaining a congenial and diverse workplace. We make our clients’ business issues our own. At the same time, we care about our attorneys, our staff and the community we are privileged to serve. As a result of our performance and our values, the firm ranked seventh on The American Lawyer’s 2014 “A-List” of 20 leading law firms in the United States.

Patterson Belknap delivers a full range of services across more than 20 practice groups in both litigation and commercial law. Our practice groups and attorneys are regularly ranked among the leaders in New York and nationally by the most respected industry guides, based on client and peer reviews. Clients include a diverse group of institutions and individuals: from pharmaceutical and medical device companies to major media and publishing empires; from consumer products companies to financial institutions; from fine art museums to famous entertainers; from foreign companies seeking to transact business on U.S. stock exchanges to U.S. companies doing business abroad.

Patterson Belknap is a magnet for independent thinkers. We were founded by attorneys who believed they could create a more congenial atmosphere on their own, away from the lockstep anonymity of larger firms. The firm carefully manages growth and purposefully operates with a single office in New York City. As a result, we can exercise concentrated quality control, and our attorneys can draw freely on each other’s skills in an atmosphere that has been described as “collegial to the extreme.” The National Law Journal has included Patterson Belknap on a list of firms that it considers to have “the nimbleness and adaptability that come from lean operations and strong client ties.” This environment promotes the responsiveness, efficiency and personal attention we believe clients seek. The reward for Patterson Belknap has been the loyalty of our clients, many of which have remained with the firm for decades.

Commitment to public service is, and always has been, a key value of the firm. We are consistently ranked near the top of The American Lawyer’s annual pro bono survey. Every year since 2004, 100% of our attorneys participated in pro bono projects, perhaps a first for a law firm of our size. At the heart of our pro bono program is a deep commitment to bringing the best possible legal representation to the most underserved, and frequently overlooked, populations. We are proud of the work we do, frequently teaming up with some of the nation’s most respected legal services organizations, to improve the lives of those whose voices might not be heard otherwise. We are also committed to the defense of human and civil rights. Our pro bono work includes the defense of prisoners on death row and our attorneys have filed several amicus briefs in the U.S. Supreme Court and federal courts of appeal on issues relating to the “War on Terror.”

Patterson Belknap is dedicated to being the best professional home in New York City, maintaining an atmosphere and culture of civility, dignity, inclusion, and respect in which all firm personnel can engage and flourish. Diversity among our lawyers and staff is critical to that culture. Among our several diversity initiatives, we have three affinity groups (Patterson Attorneys of Color, Out at Patterson, Women Lawyers at Patterson), which meet regularly to discuss issues and concerns and to foster mentoring. The affinity groups also assist in efforts to recruit women and diverse students, clerks, and lateral attorneys.

Gregory Diskant is described as an “excellent first-chair advocate,” and “a rock star” by clients. He is a seasoned patent litigator and led for Johnson & Johnson in its Federal Circuit appeal triumph regarding coronary stents.
Chambers USA, 2014