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


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.

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Oblon Attorneys Ranked in 2024 IAM Patent 1000

  • June 12, 2024
  • Firm News

We are pleased to announce that several of the firm’s attorneys have been ranked in the 2024 edition of IAM Patent 1000.  The IAM Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive ‘go-to’ resource for those seeking world-class legal expertise.  IAM Patent 1000 identifies Oblon as offering IP services across the board from its Virginia and Tokyo offices, valuing long-term partnerships with clientele in order to offer the best possible work product.

Our attorneys recognized this year include:

Philippe J.C. Signore, Ph.D. is Managing Partner of the firm, as well as a partner in the Electrical and Mechanical Patent Prosecution group, Patent Litigation group, and Counseling and Strategic Advice group. IAM Patent 1000 identifies Signore as one who is “revered for his U.S. patent litigation background knowledge, which proves useful to foreign patrons.”

Yuki Onoe is a partner, head of the Tokyo office, head of the Chemical Practice Group, and member of the Life Sciences and Litigation practice groups.  IAM Patent 1000 identifies Onoe as one who is “skilled in life sciences and cutting-edge technologies such as machine learning and AI.  Aside from prosecution, she is known for her incisive pre-litigation advice, especially for pharmaceutical companies.”  According to one of Onoe’s satisfied clients, “Her skills are excellent and her knowledge relating to U.S. patent practice is deep.  She always takes time to discuss complicated matters with us.”

David M. Longo, Ph.D. is a partner in the Electrical, Mechanical and Design practice groups, and chair of the Prosecution Management Committee.  IAM Patent 1000 identifies Longo as one who “deftly manages international portfolios for major players in the electrical industries.”

Marina I. Miller, Ph.D. is partner in the Chemical Patent Prosecution group.  IAM Patent 1000 identifies Miller as one who “excels in the life sciences offering tailored counsel based on her extensive education in both chemistry and physics.”

According to our clients, “Oblon is very astute, and it actively communicates to understand the client’s needs.  The firm is superbly competent in handling U.S. prosecution and is a go-to for prosecution and IPR work.  Oblon is also a great team to have in your corner in litigation cases.”