1、您可以通过如下方式或途径对投诉方专利进行检索

中国专利：

https://cponline.cnipa.gov.cn/(中国及多国专利审查信息查询系统）

美国专利:

http://patft.uspto.gov/netahtml/PTO/search-bool.html（美国专利商标主管机关）

欧盟专利:

https://euipo.europa.eu/eSearch/（外观设计-Design）

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

2、部分案件您可以直接从申诉后台获得投诉方的资质信息并下载

3、如何查看投诉方专利的申请时间/优先权日？

a. 在申诉页面所下载的投诉方知识产权相关材料证书中核实，具体查询方式如上文所示；

b. 在国家知识产权局专利查询网站查询：http://cpquery.cnipa.gov.cn/(中国及多国专利审查信息查询系统）

优先权日：属于专利法中的特殊制度，若专利存在优先权的，判断在先证明材料的时间节点从优先权日开始计算，专利证书及专利查询网站上均可查询到优先权日。

---------English Version---------------------------------

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.