What this record means
The record shows that “PERCY PIGGY” is no longer active – the Principal Register registration (number 1028557) was cancelled on May 25 1982 because the registrant, Questor Corporation, failed to file an acceptable Section 8 declaration, and the file lists no later maintenance activity. The only listed class is 010, but the goods description is blank, so the record’s concern is confined to whatever goods might fall under that class, not to any broader category. Because the entry is cancelled, the USPTO record does not give Questor control over every use of the words “Percy Piggy,” and it does not automatically block a similar name in unrelated fields. The prosecution history contains only the cancellation entry, and there are no oppositions, cancellations, or court actions noted, so the supplied history shows no visible enforcement activity. I'd treat this as a modest concern if you plan to use “Percy Piggy” for goods that could be interpreted as falling within class 010; otherwise the risk appears limited.
Informational only - not legal advice.