3 trademarks were found for owners matching the name Ko Chien Chang.
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1 TM: 2288652
Desc: EVARK
Owner: KO, CHIEN-CHANG
Class: 31
Status: Registered: Registered/protected
2 TM: 2259747
Desc: KRAVE

Owner: KO, CHIEN-CHANG
Class: 31
Status: Lapsed: Not accepted
3 TM: 2239192
Desc: CHARM
Owner: KO, CHIEN-CHANG
Class: 31
Status: Registered: Registered/protected