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Efrén Del Olmo Haro joined Calderon & De la Sierra in 2016 as an intern in the trademark area, where he specialized in the prosecution of intellectual property matters, managing since then several national and international portfolios. Then, in 2017, he started his practice as an intern in the litigation area where he has focused on complex patent matters pertaining to the biotechnology and pharmaceutical fields, as well as in the handling of various contentious proceedings in trademark and patent matters.
Subsequently, in 2019 he concluded his Law Degree at Universidad LaSalle, from which he graduated with the National Award for Excellence Performance EGEL – CENEVAL, a distinction received by only 2% of law students nationwide, and since then he has served as a lawyer in the litigation department of Calderon & De la Sierra, where his practice has focused on the advice and preparation of strategies for the protection, defense and enforcement of intellectual property rights, mainly in trademark and patent matters.