2 trademarks were found for owners matching the name Professional Knowledge Systems, Inc..
#Classstatus
1 S:74172321
M:EXPERT EXPRESS
O:Professional Knowledge Systems, Inc.
16 Dead
2 S:73786231
M:EXPERT EXPRESS
O:PROFESSIONAL KNOWLEDGE SYSTEMS, INC.
9 Dead
Trademark Alertz updated from USPTO on 2030-01-24