the firm's post-grant practitioners are some of the most experienced in the country.


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Artificial Intelligence (AI)
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Fast Facts

About Our

Law Firm

About Our Law Firm

Headquartered within steps of the USPTO with an affiliate office in Tokyo, Oblon is one of the largest law firms in the United States focused exclusively on intellectual property law.

Get to know our


Get to know our History

Norman Oblon with Stanley Fisher and Marvin Spivak launched what was to become Oblon, McClelland, Maier & Neustadt, LLP, one of the nation's leading full-service intellectual property law firms.

Our Local and

Global Reach

Our Local and Global Reach

Outside the US, we service companies based in Japan, France, Germany, Italy, Saudi Arabia, and farther corners of the world. Our culturally aware attorneys speak many languages, including Japanese, French, German, Mandarin, Korean, Russian, Arabic, Farsi, Chinese.

A few of our


A few of our ACCOLADES

Oblon's professionals provide industry-leading IP legal services to many of the world's most admired innovators and brands.




From the minute you walk through our doors, you'll become a valuable part of a team that fosters a culture of innovation, client service and collegiality.

A few ways to

GET In Touch

A few ways to GET In Touch
US Office

Telephone: 703-413-3000
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Tokyo Office

Telephone: +81-3-6212-0550
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Patent Forms

Downloadable Patent Forms

The United States Patent and Trademark Office (USPTO) issued final rules implementing the inventor's oath or declaration provisions of the America Invents Act (AIA) on August 14, 2012.

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Arthur I. Neustadt

Arthur I. Neustadt

Senior Partner ∙ US Office
T: (703) 413-3000
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Arthur I. Neustadt is a founding member and a named partner in the firm. He established the firm’s litigation practice and has been actively involved in intellectual property litigation in courts throughout the United States for many years. He has successfully tried jury and bench cases in varied areas of technology before the federal district courts and the ITC and has argued appeals before the Supreme Court, the Federal Circuit and the federal regional circuit courts of appeal. Mr. Neustadt has lectured widely, both domestically and internationally, on intellectual property litigation. He litigated the landmark Festo v. SMC case over a twenty year period in which he successfully argued before the Supreme Court and twice before the en banc Federal Circuit. He argued again before the Supreme Court in Medtronic v. Boston Scientific.

Mr. Neustadt was designated by Legal Times as one of the top Washington, D.C. area intellectual property attorneys. Chambers USA refers to him as “very conscientious, very bright and very knowledgeable,” “an inspirational and highly creative attorney,” “a true landmark setter,” “known to get great settlements quickly due in part to the good grasp he has of the dynamics of litigation” and “according to competitors, ‘proficient at identifying issues and working with a cost-benefit approach.’” Intellectual Asset Management describes him as a “luminary.” Mr. Neustadt was selected by his peers for inclusion in Best Lawyers in America, was named as a Super Lawyer for both Washington, D.C. and Virginia and was selected as a finalist in the Lawdragon 500 Leading Lawyers in America. He has also served on the Intellectual Property Advisory Committee to the U.S. District Court for the District of Delaware.

Mr. Neustadt’s cases include

Norgren v. ITC (FRL connector patent held invalid as obvious);
Medtronic v. Boston Scientific (non-relief requesting patent licensor held to have burden of proof);
Saint-Gobain v. Xinyi (automotive windshield patents held valid and infringed, double damages and attorney fees awarded);
Cardiac Pacemakers v. St. Jude (en banc) (invalidity ruling for pioneer implantable cardioverter defibrillator (“ICD”) patent reversed, 271(f) construed);
Tokyo Keiso v. SMC (volume flowmeter patent held invalid as obvious);
Festo v. SMC (doctrine of equivalents restricted by prosecution history estoppel);
Medtronic v. Guidant (pioneer patent for treatment of congestive heart failure held valid);
Cardiac Pacemakers v. St. Jude (jury validity verdict for pioneer ICD patent reinstated);
Loral Fairchild v. Toshiba (Rader, J. sitting by designation) (early charge coupled device (CCD) patent held invalid and not infringed),
Li v. Toshiba
(early semiconductor patent held inequitably procured, attorney fees awarded)
Ajinomoto v. ADM (multi-million dollar damages award for infringement of mutation genetics and recombinant DNA patent).


  • Georgetown University Law Center (J.D.)
    • American Jurisprudence Award
    • Phi Delta Phi
  • University of Maryland (B.S.E.E.)
    • Electrical Engineering
    • Tau Beta Pi, Eta Kappa Nu


  • District of Columbia
  • Virginia
  • Registered to practice before the U.S. Patent and Trademark Office
  • Supreme Court of the United States
  • U.S. Court of Appeals for the First Circuit, Second Circuit, Third Circuit, Fourth Circuit, Fifth Circuit, Sixth Circuit, Seventh Circuit, Eighth Circuit, Ninth Circuit, Tenth Circuit, Eleventh Circuit, Federal Circuit and District of Columbia Circuit
  • U.S. Court of Customs and Patent Appeals
  • U.S.Claims Court
  • U.S. District Court for the Northern District of California, District of Colorado, District of Columbia, Eastern District of Michigan, Western District of Michigan, Eastern District of Virginia and Eastern District of Wisconsin
  • Supreme Court of Virginia


  • Intellectual Asset Management (IAM) Patent 1000: The World’s Leading Patent Practitioners, named to its list of the top 1000 patent attorneys in the world and recognized in the Washington, D.C. metro area for his patent litigation work
  • Martindale-Hubbell® AV® Preeminent 5.0 out of 5 rating
  • Best of the Best
  • Best Lawyers in America, named among the best in Intellectual Property Law
  • Chambers USA, selected as one of "America's Leading Lawyers for Business" (Intellectual Property)
  • Lawdragon 500 Leading Lawyers in America, finalist
  • Legal Times, designated one of top intellectual property attorneys in Washington, D.C. area
  • Virginia Super Lawyer
  • Washington, D.C. Super Lawyer

Professional Affiliations

  • American Bar Association, Sections on Litigation; Patent, Trademark and Copyright Law
  • American Intellectual Property Law Association (AIPLA)
  • The District of Columbia Bar Association, Sections on Litigation; Computer Law; Patent, Trademark and Copyright Law
  • Federal Circuit Bar Association
  • ITC Trial Lawyers Association
  • Virginia State Bar Association, Section on Patent, Trademark and Copyright Law