Yang Yang
Yang Yang is an Anaheim, California-based trademark practice with 1,262 USPTO filings on file, 1,238 of which are currently live. The firm has represented 1,072 distinct trademark owners — a broad client roster of mostly one-off filings at roughly 1.2 marks per client. In TTAB practice, the firm has handled 18 proceedings, more often as defendant (17) than plaintiff (1). 1 attorneys have appeared at the firm — 1 focused on prosecution.
0Registered17Pending0DeadKWAI CHUNG HONG KONG, HK
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Editorial deep dives on prosecution strategy, TTAB, and brand portfolios
Class 42 Filings Up 32% Year Over Year as September 2026 Tops September 2025
Counting applications filed directly with the USPTO, Class 42 filings rose 32.4% from September 2025 to 6,629, and total U.S.-direct applications reached 55,636, up 3.2% from a year earlier.
TTAB in Q3 2026: Contested Filings Rise 3.9% While Defaults End 56% of Oppositions
Oppositions and cancellations filed at the TTAB rose 3.9% to 3,044 in Q3 2026. Of the 2,937 that ended during the quarter, 1,636 (55.7%) ended in default because the respondent never answered.
How the Thirteen du Pont Factors Actually Get Weighed
The thirteen factors were never a scoring rubric: two keystones decide most cases, any single factor can end one, and the rest move only when someone pays to put evidence in. The finale of our thirteen-part series, with the scoreboard of every case it covered.