Guilherme Doin is a well-established Founding Partner at Leoni Siqueira, Guerra & Doin Advogados, a law firm located in Brazil. Doin's professional career has been focused on providing legal assistance and counsel on various areas of law, such as Civil Law, Commercial Law, and Real Estate Law. He has built his expertise by working on significant transactions involving property rights, contracts, partnerships, and litigation procedures.

Doin holds a degree in law from the Universidade Estadual Paulista (UNESP). After graduation, he pursued his studies and gained further experience in Law, Intellectual Property, and Business Law at the University of California, Berkeley, and at the Instituto de Empresa, Madrid.

Doin is highly regarded in his field of work and prides himself on providing clients with reliable, practical, and cost-effective legal solutions. His profound understanding of the Brazilian legal system and his ability to navigate complex legal issues make him a valuable asset to his clients.