Slayden, Nellie Fisher

Nellie Fisher


Nellie Fisher Slayden practices in Intellectual Property Law. Her practice focuses on complex intellectual property and commercial litigation in numerous courts across the U.S. Her experience spans all phases of IP litigation from pre-trial due diligence to final appeal before the Federal Circuit and administrative proceedings before US regulatory bodies.

She has served clients from both the Litigation and Intellectual Property Law departments of leading global law firms.

Ms. Slayden advises clients in the following areas of intellectual property and media law:

  • Global IP asset strategy, particularly U.S. and Europe
  • Freedom-to-operate counseling, product clearance and other patent matters
  • Licensing and monetizing IP (including related technology agreements)
  • Media and film production agreements
  • Securing/monetizing media and film production incentives in all 50 States and worldwide
  • Patent prosecution
  • Start-up and entrepreneurial ventures
  • Trademark, trade secret, and domain name disputes and litigation

In addition to industry experience as an engineer and project manager, Ms. Slayden’s technical experience covers a broad variety of technologies, including blood glucose monitoring systems, integrated circuit manufacturing, fiber optics, hybrid broadcast systems, computer integrated telephony, automatic identification and machine vision, polymer catalysis, multilayer polymer films, heavy machinery, hybrid mechanical and control devices, hydrocarbon production and reservoir recovery systems, hydrocarbon transportation systems, and refining and petrochemical processing.

Previously, Ms. Slayden counseled at the AmLaw 50 law firm of King & Spalding LLP in the Department of Intellectual Property. She also practiced at the international law firm of Baker Botts LLP in both the Litigation Department (Austin) and the Intellectual Property Law Department (Houston).

During law school, Ms. Slayden was privileged to serve as the first Judicial Intern for the Honorable Ewing Werlein, Jr., United States District Judge for the Southern District of Texas, Houston.

Industry Experience

Ms. Slayden’s industry experience includes IP Counsel at Shell Oil Company, where she advised various business clients. She was also tasked with presenting US IP litigation strategy to her European counterparts and executive leadership at Royal Dutch Shell in The Hague. Prior to law school, Ms. Slayden gained first-hand engineering experience as a Process Systems Engineer and Project Leader at KBR, a global technology, engineering, and construction company serving the petrochemical industries.


  • J.D., University of Houston (1996) - Magna Cum Laude, Order of the Coif, Order of the Barons, Houston Law Review, Top 1% of 1996 Class
  • B.S., Petroleum Engineering, University of Texas, Austin - Dean’s List


  • State Bar of Texas
  • U.S. Patent and Trademark Office
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Courts - Eastern District of Texas
  • U.S. District Courts - Southern District of Texas
  • U.S. District Courts - District of Colorado


  • Intellectual Property Litigation
  • Patent Office Trials
  • Strategic IP Counseling & Portfolio Management
  • Licensing & Technology Transactions
  • Entertainment & Media Law
  • Domain Name Disputes
  • Copyrights
  • Trade Secrets
  • Trademarks

Technologies & Industries

  • Automotive
  • Chemicals & Processes
  • Consumer Products
  • Electronics & Robotics
  • Financial Services
  • Industrial Machinery & Heavy Engineering
  • Materials Science & Engineering
  • Media & Entertainment
  • Medical Devices
  • Oil & Gas
  • Semiconductor & Integrated Circuits

Representative Matters


Product clearance and freedom-to-operate counseling for numerous Fortune 100 organizations.

Negotiate and draft a variety of intellectual property licenses and technology agreements for Fortune 100 clients.

Selected by consortium of large utilities to lead negotiations against a nationally-known patent licensing entity; considered and complied with anti-trust laws.

Patent portfolio management and strategy for Fortune 100 and Global 50 entities.


Represented clients in numerous Federal district courts across the country, including in S.D. Texas, E.D. Texas, Delaware, N.D. California, E.D. Pennsylvania, Nevada, S.D. New York, and Arizona.

Represented clients in appeals to the Federal Circuit Court of Appeals.

Represented clients in proceedings before the U.S. International Trade Commission.