1. On September 15, 1993, the Chinese government submitted its instrument of accession to the Patent Cooperation Treaty to the World Intellectual Property Organization, becoming a member state as of January 1, 1994. The Patent Office of China is China's agency dealing with cases involving the Patent Cooperation Treaty, performing international patent searches and preliminary examinations. 
   1993年9月15日，中国政府向世界知识产权组织递交了《专利合作条约》的加入书。从1994年1月1日起，中国成为专利合作条约成员国，中国专利局成为专利合作条约的受理局、国际检索单位和国际初步审查单位。
2. To become a party to an agreement or treaty. 
   加入，参加成为一条约或合同的一部分
3. To end( a law or a treaty) 
   终止一项法律或条约
4. Get behind a treaty 
   规避条约义务
5. Huddle up a treaty 
   匆匆地或草率地签订一个条约

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