1、您可以通過如下方式或途徑對投訴方專利進行檢索

中國專利：

https://cponline.cnipa.gov.cn/(中國及多國專利審查信息查詢系統）

美國專利:

http://patft.uspto.gov/netahtml/PTO/search-bool.html（美國專利商標主管機關）

歐盟專利:

https://euipo.europa.eu/eSearch/（外觀設計-Design）

https://www.epo.org/searching-for-patents.html（專利-Patent）

2、部分案件您可以直接從申訴后臺獲得投訴方的資質信息并下載

3、如何查看投訴方專利的申請時間/優先權日？

a. 在申訴頁面所下載的投訴方知識產權相關材料證書中核實，具體查詢方式如上文所示；

b. 在國家知識產權局專利查詢網站查詢：http://cpquery.cnipa.gov.cn/(中國及多國專利審查信息查詢系統）

優先權日：屬于專利法中的特殊制度，若專利存在優先權的，判斷在先證明材料的時間節點從優先權日開始計算，專利證書及專利查詢網站上均可查詢到優先權日。

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How to search for the complainant's patent

1、You can search for the complainant's patent in the following ways:

Chinese patents:

https://cponline.cnipa.gov.cn/ (Chinese/multinational patent inquiry system)

U.S. patents:

http://patft.uspto.gov/netahtml/PTO/search-bool.html (U.S. patent and trademark authority)

European patents:

https://euipo.europa.eu/eSearch/(Designs)

https://www.epo.org/searching-for-patents.html (Patents)

2、 In some cases, you can assess and download the complainant's IPR rights on the Appeal page

3、 How to check the application date/priority date of the complainant's patent?

a. Download the complaint's intellectual property materials on the Appeal page and check the application date of the patent as shown above.

b. Search on the website of China National Intellectual Property Administration: http://cpquery.cnipa.gov.cn/ (Chinese/multinational patent inquiry system)

Priority date:

Priority date is a special concept under the patent law. Under Article 29 of the Patent Law of People’s Republic of China, Where an applicant, within twelve months from the date of first-filed patent application for an invention or utility model in a foreign country or within six months from the date of the first-filed patent application for a design in a foreign country, also files a patent application for the same subject in China, he/it may enjoy priority in accordance with the agreement entered into between the foreign country and China or the international treaty participated by both the foreign country and China or under the principle of mutual recognition of priority. Where an applicant, within twelve months from the date of the first submission in China of an application for a patent for invention or utility model, or within six months from the date of the first submission in China of an application for a patent for design, also files an application for a patent for the same subject with the patent administrative department under the State Council, he/it may enjoy priority.

If a patent has a priority date, the materials should prove that the prior use occurred prior to the priority date. If you cannot identify the priority date on the patent license, you can check it on the patent inquiry website.