2 trademarks were found for owners matching the name O'Brien, Mark K..
#Classstatus
1 S:77079456
M:RIVAL ME I'M BETTER THAN YOU! WHO'S BETTER THAN WHO?

O:O'Brien, Mark K.; O'Brien, Eric M.
25 Dead
2 S:75434150
M:OFFICIAL SQUIRLBOY

O:O'Brien, Mark K., O'Brien, R. Michael, THE CARTOON NETWORK LP, LLLP, TROUT & ZIMMER
25 Dead
Trademark Alertz updated from USPTO on 2030-01-24