欧洲专利局:_xe?Action=FormGen&Template=gb/en/hts检索到一个专利后,查看有无同类专利就是了,如果有中文的当然最好。比如:WO2006131701检索到他的简介:下面使简介:Patent number: WO2006131701 Publication date: 2006-12-14 Inventor: STENTIFORD FREDERICK WARWICK M (GB) Applicant: BRITISH TELECOMM (GB); STENTIFORD FREDERICK WARWICK M (GB) Classification: - international: G06K9/64; G06T7/00; G06K9/64; G06T7/00; - european: G06K9/64A2 Application number: WO2006GB02001 20060601 Priority number(s): EP20050253589 20050610 View INPADOC patent family View forward citations View document in the European Register 右边就给出了同类专利: Also published as: EP1732030 (A1)还指出了引用的专利:Cited documents: WO03081523 XP010644901