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美国大卫雷文专利集团总部设在美国加州，分处及合作伙伴遍及洛杉矶、纽约、阿罕布拉、巴沙迪亚、北京、上海、深圳、宁波、杭州、武汉、佛山、香港及台湾等地. 本集团的首席专利代理人陈冠州博士已在各种技术领域中为发明人或企业成功争取到8000多例的各国专利权。其中，全球第三大打火机制造商、全美第一大球类生产商、全美第三大婴儿用品公司、全美第三大GPS导航器具公司、全美第一大的户外运动器具制造商等都是我们长期的战略合作伙伴。中国东风集团、上汽集团、舜宇集团、厦门乾照光电与我们都签署了长期顾问协议。 David&Raymond is a well-known American-Chinese based U.S. patent firm since 1993 with direct branches in Beijing, Shanghai, Shenzhen, Hangzhou, Ningbo, Wuhan, Shaoxing, Changzhou, Foshan, Hong Kong, Taiwan, Malaysia and Vietnam. We have established a domestic patent agency firm and intellectual property law firm in China which are specialized in prosecuting patent application, patent right protection, strategic intellectual property planning, and intellectual property right enforcement for both U.S. and Chinese inventors and enterprises. We are experienced and professional in the U.S. and Chinese intellectual property practices.