- 中国国家知识产权局
原名中华人民共和国专利局（简称中国专利局）。1980年经国务院批准成立。
http://www.sipo.gov.cn 5000
- 专利和商标组
Patent and Trade Mark Group (PATMG) is a Special Interest Group of the Chartered Institute of Library and Information Professionals
http://www.patmg.org.uk/ 5000
- 中国国际化工网专利查询之中国
利用申请（专利）号，名称，摘要，申请日，公开（公告） 日 公开（公告）号，分类号，主分类号，申请（专利权）人等信息查询相关专利，公正，准确，方便快捷。
http://www.intchem.net/zhuanli/china.htm 5000
- 匈牙利专利局
The Hungarian Patent Office is an administrative authority with country-wide powers in the field of intellectual property.
http://www.hpo.hu 5000
- 欧洲专利局
The EPO is not an EU institution. It is completely self-financing and has a large degree of administrative autonomy. Its operating and investment budgets are funded entirely from procedural fees and from part of the annual renewal fees levied on granted European patents. The contributory pension sch
http://www.european-patent-office.org 5000
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