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Phone:52 (55) 5258-1050
Switch:52 (55) 5258-1000
Fax:52 (55) 5258-1098
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Efrén Sánchez


He counts with approximately 15 years of experience as a Patent Engineer (Patent Examiner at IMPI & Patent Associate at the firm) and has broad industrial property experience in all phases of patent prosecution, such as preparing and filing new applications for National & International patents, utility models and industrial designs, preparing and holding meetings with inventors & applicants as well as officers of the Mexican Institute of Industrial Property. Before being part of Von Wobeser y Sierra S.C. he was a patent examiner of the Substantive Examination Direction at the Mexican Institute of Industrial Property from 1998 to 2008. He has practiced in the intellectual property field since 1998, specializing in Electric, Electronic, Software, Communications Systems and Mechanical patents & utility models. He also conducts patentability searches, infringement searches, clearance searches and family searches. He also prepares patentability opinion reports for new inventions. He has had official training at the Mexican Institute of Industrial Property , BSKB Law Firm in the USA, The European Patent Office and the World International Intellectual Property Organization. Prior to being part of the Von Wobeser team he worked as a Communication Engineer for INMER, TELMEX, Starmicronics, Biper & Televisa.

Main Practices

Efrén Sánchez is engaged in the following practice areas:


Spanish and English.

Education, Professional Affiliations and Academic Activities

He obtained his Engineering Degree, Universidad Nacional Autónoma de México (UNAM), Mexico City, 1993.

He concluded his Specialized Course, Introduction for New Examiners for Patents, (IMPI), Mexico City, 1998.

He attended the Seminar on International Cooperation Agreement Patent, (IMPI), Mexico City.

He attended the Seminar on Search and Examination of Patent Applications in Physics, Electrical and Mechanics, The Hague, 2003. 

He was a speaker at the conference, Patents, Utility Models and Industrial Designs, Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM), Mexico City.

He was a speaker at the conference, Patents, Utility Models and Industrial Designs, Universidad del Valle de México (UVM), Mexico City.

He concluded the Patent Seminar, Birch, Stewart, Kolasch & Birch LLP, Washington, D.C., 2012.

Committee on Invention and Patents of the Chamber of Commerce Mexico (ICC Mexico).

American Intellectual Property Association (AIPLA).

Mexican Association on Intellectual Property (AMPPI).



Pro Bono and Diversity

Actively involved in the firm´s Pro Bono activities.