Who owns the PORTOBLOCKS trademark?

The PORTOBLOCKS trademark is owned by H. K. Porter Company, Inc..

What class is the PORTOBLOCKS trademark registered in?

The PORTOBLOCKS trademark is registered in Class 035 (Advertising, business management & retail services).

The USPTO serial number for PORTOBLOCKS is 72113554.

PORTOBLOCKS is registered under USPTO registration number 722583.

Updated Nov 4, 2026·26 searches this week

POR

ABANDONED

Advertising; business management, organization and administration; office functions.

Class 035Advertising, business management & retail services

US codes: 035

First use anywhere: Jul 15, 1960

First use in commerce: Sep 26, 1960

Advertising; business management, organization and administration; office functions.

This description is as filed with the USPTO and defines the scope of trademark protection.

Status History

3 events

CANCELLED SEC. 8 (10-YR)/EXPIRED SECTION 9

Jul 20, 2002

Code CAEX

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

Oct 25, 1984

Code C15A

REGISTERED AND RENEWED (FIRST RENEWAL - 20 YRS)

Oct 10, 1981

Code REN1