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

Michael R. Casey, Ph.D.
Derek  Lightner, Ph.D.
Steven B. Chang
Robert W. Downs
Jenchieh (Joseph) Yuan
Jeffrey B. McIntyre
Nicholas  Rosa, Ph.D.
Stephen G. Baxter, Ph.D.
Bogdan A. Zinchenko
Dale M. Shaw
Kurt M. Berger, Ph.D.
Kevin Ross  Davis
Arthur I. Neustadt
Norman F. Oblon
Edwin D. Garlepp
Alec M. Royka
John F. Presper
Long  Phan, Ph.D.
Carl E. Schlier
Charles L. Gholz
Stefan Uwe  Koschmieder, Ph.D.
Akihiro  Yamazaki
Brian B. Darville
Christopher I. Donahue
Chika (Teranishi) Iitoyo
Marina I. Miller, Ph.D.
Eckhard H. Kuesters
Eric W. Schweibenz
Thomas M. Cunningham, Ph.D.
Yuki  Onoe
Teddy S. Gron
Richard D. Kelly
Surinder  Sachar
Aldo  Martinez
Jianping (James)  Wu
Daniel J. Pereira, Ph.D.
Kevin M. McKinley
Jay E. Rowe, Jr., Ph.D.
Kasumi  Kanetaka
David M. Longo, Ph.D.
Andrew M. Ollis
Ryan W. Smith
Frank J. West
Sameer  Gokhale
Robert  Tarcu
Kevin L. Hartman, Ph.D.
Yuanyi (Alex) Zhang, Ph.D.
Philippe J.C. Signore, Ph.D.
John S. Kern
Grace E. Kim
John  Sipos
Alexander B. Englehart
Yorikatsu  Hohokabe, Ph.D.
J. Derek  Mason, Ph.D., CLP
Christopher  Ricciuti
Craig R. Feinberg
Diane  Jones
Elissa L. Sanford
Robert T. Pous
Tao  Feng, Ph.D.
Colin B. Harris
James R. Love
Tia D. Fenton


Artificial Intelligence (AI)
Artificial Intelligence (AI)
Digital Health
Digital Health
Energy & Renewables
Energy & Renewables

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
Learn More +

Tokyo Office

Telephone: +81-3-6212-0550
Learn More +


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.

Tia D. Fenton

Tia D. Fenton

Partner ∙ US Office
T: (703) 413-2777
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Tia D. Fenton, is a Partner, Co-chair of the Litigation practice group and member of the ITC Litigation practice group. Ms. Fenton also serves as General Counsel to the firm. With a background in chemistry, biochemistry and genetics, her practice is focused primarily on chemical, biochemical, biomedical, and pharmaceutical cases. She has particular experience in chemical and ANDA litigations and is a member of the firm’s Pharmaceutical/Medical Devices practice group, including biologics/biosimilars.

Prior to attending law school, Ms. Fenton worked as a Forensic DNA Analyst at Cellmark Diagnostics, Inc., and as a Forensic DNA Examiner at the Department of Defense's Armed Forces DNA Identification Laboratory, serving as an expert witness in DNA identification testing for approximately four years and testifying in numerous trials throughout the country. She is also experienced lecturing scientists and graduate students on the presentation and effective use of scientific and technical evidence in the courtroom. Ms. Fenton’s extensive trial and testimony experience provides her with a unique perspective on litigation, including particular skills in preparing expert witnesses for depositions and trial, and presenting technical evidence to juries as well as judges during ANDA bench trials.

In addition to litigating cases in district court and before the Federal Circuit, Ms. Fenton represents both domestic and foreign companies in a full range of complex patent matters. She routinely advises clients on litigation procedure and strategies, litigation avoidance, and the overall protection and enforcement of patent portfolios. Ms. Fenton also has experience in post-grant proceedings, as well as prosecution-related matters in the chemical, medical device, and pharmaceutical areas. She also has experience litigating and counseling clients on the strategic use of the USPTO post-grant proceedings in conjunction with the district court.


  • George Mason University School of Law (J.D.)
  • Marshall University (M.S.)
    • Forensic Science, concentrating in DNA technologies
  • Wheeling Jesuit University (B.S.)
    • Chemistry


  • District of Columbia
  • Virginia
  • Registered to practice before the U.S. Patent and Trademark Office
  • U.S. District Court for the Eastern District of Virginia


  • Intellectual Asset Management (IAM) Patent 1000: The World’s Leading Patent Practitioner (2021)
  • 2022 Influential Woman of Law - recognized by Virginia Lawyers Weekly

Professional Affiliations

  • American Bar Association
  • American Intellectual Property Law Association (AIPLA)
  • National Association of Women Judges
  • Virginia Bar Association



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