Budapest Treaty on the International Recognition of the Deposit of Microorganisms for the Purposes of Patent Procedure was passed on Budapest on April 28, 1977, and amended on September 26, 1980. Budapest Treaty includes 4 parts and 20 articles relating to patent procedure. The main feature of the Treaty is that a contracting State which allows or requires the deposit of microorganisms for the purposes of patent procedure must recognize, for such purposes, the deposit of a microorganisms with any “international depositary authority”, irrespective of whether such authority is on or outside the territory of the said State. The Treaty increases the security of the depositor because it establishes a uniform system of deposit, recognition and furnishing of samples of microorganisms.
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http://www.wipo.int/treaties/en/text.jsp?file_id=283784