Goodrich Riquelme y Asociados is recommended for both patent filing/prosecution and disputes work. Senior partner Enrique Diaz heads the IP group. Diaz deals with contentious and non-contentious IP work. Another key contact in the firm is head of litigation group Guillermo Sosa, who often represents pharmaceutical companies. A practitioner to watch is Juan Suarez, who specialises in mechanical and electrical patents and designs work.