Luis Diego



Luis Diego Castro is regarded as one of the most experienced attorneys on Patent Law and Life Sciences in Costa Rica and Central America. He currently practices in the areas of Intellectual Property, Technology, and Corporate Law, and coordinates Costa Rican and regional (Central American) patent prosecution and litigation work.

He recently obtained the first ever issued Court injunction on behalf of a large biotech company in Costa Rica, preventing a competitor from selling a biosimilar that presumably violated a patent for the manufacturing process.

Luis Diego was also head legal counsel for the plaintiff in two landmark patent cases before the Costa Rican Vourts. Filed and prosecuted the first plant variety to be registered in Costa Rica. Has obtained patent protection for multiple pharmaceutical and agrochemical biotech inventions filed on behalf of multinational companies.

Constantly advises local and foreign technology-based companies investing in Costa Rica on setting up their operation; negotiating joint technology development projects, licensing, know-how and trade secrets.

Luis Diego has been a consultant for Nathan Associates on the project for the United States Agency for International Development (USAID) “Support for Trade Capacity Building in Central America – E-Commerce”.

Luis Diego has been a frequent invited lecturer and speaker on intellectual property topics at universities and trade associations in Costa Rica and abroad. He has also spoken about biotech patents and patent eligibility in Central America at several AIPLA events and webinars.

A seasoned writer on diverse patent topics in Costa Rica, same that have been published by various publishing companies, including the Chambers and Partners.

25 years ago he founded and directed the law firm Castro y Pal Abogados, he was later a partner at Arias.


  • Law Degree from the University of Costa Rica (UCR).

  • Notary Public.

  • Program for Instruction for Lawyers at Harvard Law School (1999).


English / Spanish

Personal Interests:

He enjoys spending quality time with his family, and traveling.