Yigang Cai Patents – Insights & Stats

Yigang Cai has filed 1160 patents, out of which 593 have been granted. Of these 1160 patents, more than 33% patents are active. Out of these 1160 patents, 340 patents filed only in the US, out of which 214 patents has been granted.

Do read about some of the most popular patents of Yigang Cai which have been covered by us in this article and also you can find his patents filing trend over the years, the worldwide coverage and many other stats over Yigang Cai patent portfolio.

The data of inventors’ patents made available here is solely intended for informational purposes. Although we make every effort to maintain the accuracy and comprehensiveness of the provided information, we cannot guarantee that all data is completely free of errors or entirely up-to-date. If you happen to be the Inventor and wish to contribute additional data for your respective portfolio, kindly get in touch with us.

How many patents does Yigang Cai have?

Yigang Cai has a total of 1160 patents. These patents belong to 317 unique patent families. Out of 1160 patents, 388 patents are active.

How Many Patents did Yigang Cai File Every Year?

Are you wondering why there is a drop in patent filing for the last two years? It is because a patent application can take up to 18 months to get published. Certainly, it doesn’t suggest a decrease in the patent filing.

Year of Patents Filing or GrantYigang Cai Applications FiledYigang Cai Patents Granted
202310
2022328
2021827
20202521
20192929
20184137
20176340
20164749
20155752
20143971
20135258
20128266

 How many Yigang Cai patents are Alive/Dead?

How Many Patents did Yigang Cai File in Different Countries?

Countries in which Yigang Cai Filed Patents

CountryPatents
United States Of America340
China173
Europe166
Japan117
Korea (South)110
Germany27
Austria8
Brazil8
Taiwan6
Spain6
Russia6
Mexico4
Australia4
Canada3
Turkey1

Where are Research Centres of Yigang Cai Patents Located?

 10 Best Yigang Cai Patents

US8126123B2 is the most popular patent in the Yigang Cai portfolio. It has received 245 citations so far from companies like Headwater Partners, At&T Intellectual Property and Lifeware Labs.

Below is the list of 10 most cited patents of Yigang Cai:

Publication NumberCitation Count
US8126123B2245
US8131266B2224
US8121624B2222
US8483135B2202
US20070274468A1172
US8347362B2169
CN101427244A166
US20040088244A1132
US20110039581A1131
WO2009070179A1125

How many inventions of other companies were rejected due to Yigang Cai patents?

The statistics below share strategic R&D insights. It tells the companies that were trying to protect inventions similar to Yigang Cai invention. They couldn’t because Yigang Cai had protected those before them.

Examiners at the USPTO used 230 Yigang Cai patents in 1861 rejections (35 USC § 102 or 35 USC § 103 types).

The top companies whose faced patents application rejections citing Yigang Cai patent portfolio are Ericsson, At&T, and Huawei.

List of the Companies whose Patents were rejected citing Yigang Cai –

CompanyNumber of Patent Applications that faced Rejection Citing Yigang Cai PatentsNumber of Rejections (102 & 103)
Ericsson65142
At&T4690
Huawei44100
Alcatel-Lucent4185
Verizon3989
Samsung2972
Tekelec2656
Qualcomm2245
Zte1638
IBM1633

Count of 102 and 103 Type Rejections based on Yigang Cai Patents

Top Yigang Cai Patents used in Rejecting Most Patent Applications

Patent NumberCount of Rejected Applications
US8468267B227
US7457609B217
US8831560B216
US8116728B216
US8046381B216
US7940904B214
US9240946B212
US20070143422A112
US8635288B211
US20080076453A110
US20110039581A110
US8477912B29
US8139735B29
US8175575B28
US20070189474A18

What are Yigang Cai’s key innovation segments?

What Technologies are Covered by Yigang Cai?

The chart below distributes patents filed by Yigang Cai in different countries on the basis of the technology protected in patents. It also represents the markets where Yigang Cai thinks it’s important to protect particular technology inventions.

R&D Focus: How has Yigang Cai search focus changed over the years?

EXCLUSIVE INSIGHTS COMING SOON!

Interested in knowing about the areas of innovation that are being protected by Yigang Cai?

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Our comprehensive report provides an in-depth look into the patent portfolio. The report includes a breakdown of the patent portfolio across various technologies, listing the patent along with brief summaries of each patent's technology.