附加:各国以及地区专利信息查询官方网站

中国 http://www.sipo.gov.cn/sipo_English/zljs/

古巴 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

台湾 http://www.tipo.gov.tw/eng/howto/tablesearch.asp

巴西 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

智利 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

法国 http://fr.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=fr/en/advanced.hts

秘鲁 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

美国 http://patft.uspto.gov/netahtml/PTO/search-adv.htm

韩国 http://kpa.kipris.or.kr/kpa/LO/LOIN0000Fram.jsp?searchType=A

香港 http://ipsearch.ipd.gov.hk/patent/main.jsp?LANG=en

印度 (BigPatents) http://india.bigpatents.org/

乌拉圭 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

加拿大 http://patents.ic.gc.ca/cipo/cpd/en/search/advanced.html

墨西哥 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

巴拿马 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

新加坡 http://www.epatents.gov.sg/PE/AdvanceSearchN02.asp

菲律宾 http://www.ipophil.gov.ph/PatSearch/pt_start.htm

阿根廷 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

日本通 (FPO) http://www.freepatentsonline.com/search.html

危地马拉 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

哥伦比亚 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

委内瑞拉 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

尼加拉瓜 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

拉丁美洲 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

洪都拉斯 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

澳大利亚 http://pericles.ipaustralia.gov.au/ols/searching/patsearch/search_page.jsp

玻利维亚 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

萨尔瓦多 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

俄罗斯联邦 http://ru.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=ru/en/advanced.hts

哥斯达黎加 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

欧亚专利局 http://ea.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=ea/en/advanced.hts

多米尼加共和国 http://lp.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=lp/en/advanced.hts

美国（专利申请） http://appft.uspto.gov/netahtml/PTO/search-adv.html

世界知识产权办公室 http://www.wipo.int/pctdb/en/

欧盟国家专利搜索 http://ep.espacenet.com/advancedSearch