Chang, Chenchen – Trademark Portfolio

Entity Type: 01

Chang, Chenchen holds 6 U.S. trademarks filed with the United States Patent and Trademark Office (USPTO), with a strong focus on Class 9 (Computers & Electronics) — 3 filings in this category. The portfolio also extends into Class 8 (Hand Tools) across 2 Nice Classification classes. Currently, 6 trademarks are registered. Notable registered marks include GUMJOG, JAMYUM, PIEWRY, DUEMFRU, and OFINSUT. The owner is based in Xi'an.

Xinfeng, Lintong District

No. 2, Xitong Road

Xi'an 710000 , CN

6 Total Trademarks

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DUEMFRU
DUEMFRU
Registered 2025
QUDSAIZ
QUDSAIZ
Registered 2025
OFINSUT
OFINSUT
Registered 2025
JAMYUM
JAMYUM
Registered 2021
GUMJOG
GUMJOG
Registered 2021
PIEWRY
PIEWRY
Registered 2021

Trademark Classifications

Chang, Chenchen's trademark portfolio spans 2 Nice Classification classes, reflecting the scope of goods and services protected under their brand portfolio.

9
Computers & Electronics (3 filings)

Scientific, nautical, surveying, photographic, cinematographic, optical apparatus and instruments

8
Hand Tools (3 filings)

Hand tools and implements (hand-operated); cutlery; side arms; razors

Frequently Asked Questions

How many trademarks does Chang, Chenchen have?

Chang, Chenchen has 6 U.S. trademarks filed with the USPTO. Of these, 6 registered.

What trademark classes does Chang, Chenchen file in?

Chang, Chenchen files trademarks across 2 Nice Classification classes. The most active classes are Class 9 (Computers & Electronics), Class 8 (Hand Tools). Class 9 covers scientific, nautical, surveying, photographic, cinematographic, optical apparatus and instruments.

What are Chang, Chenchen's most well-known trademarks?

Chang, Chenchen's registered trademark portfolio includes well-known marks such as GUMJOG, JAMYUM, PIEWRY, DUEMFRU, and OFINSUT. These are among 6 currently registered trademarks in the portfolio.

What is Chang, Chenchen's trademark registration success rate?

Chang, Chenchen has a 100% trademark registration rate, with 6 out of 6 resolved applications resulting in successful registration. Currently, 0 applications are pending review.