Leonard Yip
Leonard Yip is a USPTO correspondent of record based in Diamond Bar, CALIFORNIA, listed on 1,947 trademark filings (1,605 currently live). The correspondent has worked across 1,575 distinct trademark owners — a broad client roster of mostly one-off filings at roughly 1.2 marks per client. In TTAB matters, 47 proceedings appear on the record, more often as defendant (44) than plaintiff (3). The correspondent is associated with NGUYEN & YIP, P.C..
UJUK JULYLIGHT GROUP LIMITED17 marks12Registered5Pending0Dead
UG5Registered10Pending0Dead
TG7Registered7Pending1Dead
UFUK FASHION CITY LIMITED15 marks13Registered1Pending1Dead
JG14Registered0Pending0Dead
MGMOSJOY GROUP LIMITED12 marks10Registered2Pending0Dead
CGCASALAEAD GROUP LIMITED10 marks4Registered6Pending0Dead
Explore the Trademark Intelligence Library
Editorial deep dives on prosecution strategy, TTAB, and brand portfolios
TTAB Q4 2025: Opposition Plaintiffs Won Roughly Five of Every Eight Decisions
When the Trademark Trial and Appeal Board cleared its opposition docket in Q4 2025, the people who filed the oppositions mostly walked away winners.
Maradona's Heirs Win at the TTAB as Q1 Filings Slip 7.4%
On the last day of the quarter, the Trademark Trial and Appeal Board sustained an opposition brought by the heirs of Diego Armando Maradona against Sattvica S.A.
Challengers Won Most TTAB Oppositions in Q3 2025 — and Big Tech Filed a Late-September Wall of Them
When the Trademark Trial and Appeal Board decided an opposition on the merits this quarter, the party bringing the challenge usually won.