TianZheng Patent&Trademark Attorneys

SIPO P.R.C	http://www.sipo.gov.cn/
European Patent Office	http://www.european-patent-office.org/
IP Digital Library	http://pctgazette.wipo.int/
US Patent&Trademark Office	http://www.uspto.gov/
German Patent&Trademark Office	http://www.dpma.de/
Japan Patent Office	http://www.jpo.go.jp/
WIPO	http://www.wipo.int/



State Administration for Industry and Commerce of China		http://www.saic.gov.cn/
National Committee on the Accessment of the Protected Traditional Chinese Medicinal Products P.R.C		http://www.zybh.gov.cn/
Customs General Administration P.R.C		http://www.customs.gov.cn/
Office For New Varieties of Plants		http://www.cnpvp.net/
National Copyright Adminstration P.R.C		http://www.ncac.gov.cn/
Ministry of Science and Technology		http://www.most.gov.cn/
IPO of Zhejiang Province		http://202.107.204.209/
IPO of Hangzhou City		http://www.hzip.gov.cn



China Patent InfoNet	http://www.patent.com.cn/
U.S. Patent Search	http://patents.uspto.gov/
MicroPatent	http://www.micropat.com/
Derwent	http://www.derwent.com/
Delphion	http://www.delphion.com/collect_descrip
Dialog	http://www.dialog.com/
Japan Patent Information	http://www.paterra.com/
Japan Patent Information Organization	http://www.japio.or.jp/welcome.html
Coatings patents of Europe	http://www.coatings.de/patents.cfm
EPO Patents Search	http://ep.espacenet.com/
JPO Patents Search	http://www.ipdl.jpo.go.jp/homepg_e.ipdl
TaiWan Patents Search	http://www.patent.org.tw/
USPTO Kids	http://www.uspto.gov/go/kids/index.phpl