Nathaniel Longley

Nathaniel Longley



NATHANIEL (“NAT”) LONGLEY HAS A PHD IN PARTICLE PHYSICS AND A JD WITH AN EMPHASIS ON INTELLECTUAL PROPERTY LAW. Nat provides IP management, brand protection, and transactional expertise in a wide range of technologies including cloud computing, artificial intelligence, medical devices, aerospace industries, beauty products, automation systems, and across the energy sector.

Nat has worked with Fortune 500 companies, startups, and Nobel laureates. Nat leverages his patent, transactional, IP management, and litigation experiences to help clients build and maintain outstanding, global IP portfolios that are focused on growing business value, leveraging new opportunities, and protecting market share.

Education & Admissions

University of Minnesota Law School (J.D., 2006), cum laude; Dean’s List; Royal A. Stone Scholar

California Institute of Technology (Postdoctoral Fellow, 1995), “Physicist-in-Charge,” MACRO Experiment

University of Minnesota (Ph.D., Physics, 1993), Research Fellow, U.S. Department of Energy

Carleton College (B.A., 1986), cum laude; Dean’s List; National Merit Scholar


  • Minnesota
  • United States Patent and Trademark Office
  • U.S. Court of Appeals for the Eighth Circuit
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Supreme Court


  • Written Latin; newspaper-level French and Italian; FORTRAN, C/C++; Unix, Java, and Python Scripts


Representative Experience

Dr. Longley (“Nat”) has extensive experience with global IP management in the medical and energy sectors, including patent drafting and prosecution work in medical devices, radiation imaging, patient transport, power systems engineering, turbine engine systems, nuclear and solar power, energy exploration, and nuclear physics, including advanced nuclear fuel cycles.  Nat was also a postdoctoral fellow at the California Institute of Technology, where he was “physicist in charge” of the MACRO facility operated in partnership with the Italian National Institute of Nuclear Physics.  He has published and lectured extensively in the field, including collaborative work at Fermilab, CERN and Oxford, and the Institute of High Energy Physics of the Chinese Academy of Sciences in Beijing.

Representative Litigation

Prosecution, Litigation & IP Enforcement
  • Represent clients before the United States Patent office, Patent Trial and Appeal Board, and Unites States Court of Appeals for the Federal Circuit.
  • Patent prosecution and IP enforcement for medical device startup, with successful licensing arrangement for products covered under newly-issued US patents.
  • Defended against ex parte review of issued patent for medical device client, resulting in confirmation of all originally allowed claims (medical imaging technology).
  • Patent prosecution and portfolio management for rapidly growing, high-end beauty products client, increased in less than one year from a single US patent to more than two dozen issued patents, design registrations, and new applications.
  • IP analysis for private equity client, resulting in seven-figure investments in successful high-tech startups (defense-related and renewable energy industries).
  • Provided legal review of draft guidelines for electrical engineering client, with goal to reduce potential liability related to industry standards.
  • Patent prosecution and portfolio management for established electrical engineering client, generating more than fifty patent grants over most recent two-year period (cloud-based and secure data storage technologies).
  • Successful defense against well-known “trolls” asserting patents against food services and insurance industry clients, without litigation, financial settlement, or required licensing agreement.
  • Provided key litigation support and research services in successful defense of aerospace client, with nearly $4bn patent infringement claim dismissed on summary judgment.

News & Resources


The end of IP in Russia? Urgent, Extended Edition
USPTO Defers Provisional Filing Fees For COVID-19 Technologies, But Beware Of Early Publication
USPTO to Fast Track COVID-19 Technology Patents for Small and Micro Entities, Without Additional Fees
USPTO and Copyright Office Extend Filing Deadlines Under Cares Act (COVID-19 Emergency)
Federal Circuit Holds District Court Abstractness Analysis Too Abstract for Alice under 35 USC § 101
Which Way From Here? Subject Matter Eligibility After Alice v. CLS Bank (Intellectual Property Today)
The European Unitary Patent – Implications and Strategies for U.S. Businesses (Intellectual Property Today)
Overview of Intellectual Property for Business Lawyers (Kinney & Lange, PA)
Intellectual Property Law for Business Lawyers, Ch. 12, Trade Secret Law (Thomson West)
The IP Book, 5th Ed., Chapter 2, KSR Int’l Co. v. Teleflex Inc. (Midwest Intellectual Property Institute)

News & Press Mentions

Super Lawyers Recognizes 36 Dorsey Lawyers in Minneapolis
Super Lawyers Recognizes 37 Dorsey Lawyers in Minneapolis
Dorsey & Whitney Names New Partners
Super Lawyers Recognizes 39 Dorsey Lawyers in Minneapolis
Super Lawyers Recognizes 39 Dorsey Lawyers in Minneapolis
Super Lawyers Recognizes 39 Dorsey Lawyers in Minneapolis

Industries & Practices

Nonprofit & Tax Exempt Organizations
Patent Prosecution, Portfolio Strategy & Management
  • Banking & Financial Institutions
  • Electric Power
  • Energy & Natural Resources
  • Healthcare & Life Sciences
  • Intellectual Property
  • Intellectual Property Litigation
  • Mining
  • Nonprofit & Tax Exempt Organizations
  • Oil & Gas
  • Patent Prosecution, Portfolio Strategy & Management
  • Sustainability
  • Technology

Professional & Civic

Community Involvement

  • Innocent Project of Minnesota
  • Legal Corps USPTO Inventor Assistance Program
  • 4th District Ethics Committee Investigator


   Pro Bono 50 Hours 2022      Contributed 100+ Pro Bono Hours in 2021 Contributed 50+ Pro Bono Hours in 2020

  • Contributed more than 50 Challenge pro bono hours, 2020, 2022
  • Contributed more than 100 Challenge pro bono hours, 2021

North Star Lawyer logo

  • MSBA North Star Lawyer, 2013-2022
  • Listed as a "Rising Star" by Minnesota Super Lawyers, 2013-2017
  • National Science Foundation Fellow
Nathaniel Longley