Posternak Blankstein & Lund LLP is now Arent Fox. Read the press release

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Client Tested. Patent Approved.
Your company worked hard to develop its products, while building an excellent reputation with customers. How do you ensure that competitors won't slow you down? That's where we come in.

Our Team

Arent Fox is one of the few go-to firms for novel and high-profile patent issues. Clients seek us out for our creativity and business approach to their legal issues. With more than 60 full-time Patent professionals, we offer a full range of services related to the acquisition, enforcement and commercial exploitation of patent rights and assets.

Our Focus

Because our clients are diverse and include start-ups, midsize and large corporations, and university and government entities, Arent Fox has developed a well-rounded Patent practice. From Hatch-Waxman Litigation involving Abbreviated New Drug Application cases to Post-Grant Proceedings and technical work for the Chemical & Life Sciences and Electrical & Mechanical fields, we offer a deep bench of talent.

Our Industries

  • Biotechnology
  • Chemical
  • Computer/software
  • Electrical
  • Mechanical   
  • Pharmaceutical

With dozens of registered patent attorneys, agents, and scientific specialists, many who possess advanced technical degrees as well as US Patent & Trademark Office and/or clerkship experience, Arent Fox’s Patent group provides for a full range of patent needs including: patent procurement and counseling, opinion services, transactional services, post-grant proceedings, and litigation.


Our Attorneys

Arent Fox files and prosecutes hundreds of foreign applications annually. We currently manage approximately 37,000 active patent applications, including roughly 25,100 active US applications in prosecution and 11,800 foreign applications. The US patent applications include approximately 25,100 pending non-provisional applications, 1,200 pending provisional applications, and 1,300 pending design applications.

In the last few years, Arent Fox has filed more than 2,200 US patent applications and more than 800 direct foreign and PCT applications annually.

Key Contacts