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.