The Budapest Treaty establishes international depositary authorities for microorganisms to satisfy deposit requirements for patent applications. It allows deposit of a microorganism in any international depositary authority to meet disclosure needs in all member states. The Microbial Type Culture Collection and Gene Bank in India is a recognized international depositary authority under the Budapest Treaty. Depositing microorganisms is necessary for patenting inventions involving microorganisms because a description alone is not sufficient to ensure repeatability due to inherent properties of living organisms.