| ParentZone 1340419 · TMA736324 | an individual | 38 Telecommunications | Registered | 2009 |
| PARENTVIEW 2229383 | FirstGroup America, Inc. | 9 Electronics | Pending | 2022 |
| PARENTALKS 2150597 | St. Michael's College School | 9 Electronics41 Education | Pending | 2021 |
| #PARENTCUT 1967518 · TMA1151185 | an individual | 25 Clothing | Registered | 2022 |
| PERMATAGE 1819031 · TMA1075993 | Abyrx, Inc. | 10 Medical | Registered | 2020 |
| PRENTICE 1468037 · TMA784382 | Batesville Services, LLC (an Indiana limited liability company) | 20 Furniture | Registered | 2010 |
| PARENTS 1414219 · TMA907782 | Meredith Operations Corporation | 9 Electronics10 Medical16 Paper+7 | Registered | 2015 |
| PARENTNET 0811195 · TMA475014 | The Hincks-Dellcrest Institute | 42 Science44 Medical | Registered | 1997 |
| PRENTICE 0483207 · TMA288622 | Weiler Forest Products, Inc. | 7 Machines8 Hand | Registered | 1984 |
| PARENTS 0431789 · TMA261611 · design | Meredith Operations Corporation | 16 Paper | Registered | 1981 |
| PARNATE 0253600 · TMA118639 | GlaxoSmithKline Inc. | 5 Pharmaceuticals | Registered | 1960 |
| PARENTDISH 1456669 · TMA849282 | Yahoo Inc. | 41 Education | Registered | 2013 |
| PARENTOOLS 1395851 · TMA764071 | Entertainment Software Association | 41 Education | Registered | 2010 |
| PARANATIVE 2260952 | Warrior Life Studios Inc. | 9 Electronics41 Education | Pending | 2023 |
| PARENTHOOD 2199006 | Ricki's Fashions Inc. | 10 Medical24 Textiles25 Clothing+1 | Pending | 2022 |
| PRINTMATE 2211582 · TMA1232917 | Sawgrass Technologies, Inc. | 42 Science | Registered | 2024 |
| PureMate 2166119 · TMA1213425 | Super Tech Health Ltd | 11 Lighting | Registered | 2023 |
| PURENAT 1965282 · TMA1191359 · design | TOTAL FABRICATION INC. | 3 Cosmetics35 Advertising43 Restaurants | Registered | 2023 |
| PRINTOXE 1804474 · TMA1003640 · design | Pan Continent Inc. | 2 Paints7 Machines16 Paper+1 | Registered | 2018 |
| PAWRENT 1658196 · TMA940558 | an individual | 9 Electronics16 Paper18 Leather+10 | Registered | 2016 |
| PRINT2GO 1606261 · TMA939640 · design | PRINT2GO.CA INC. | 35 Advertising38 Telecommunications39 Transport+5 | Registered | 2016 |
| PORNTUBE 1431685 · TMA779803 | an individual | 41 Education | Registered | 2010 |
| PRÉNATAL 1343573 · TMA765581 · design | an individual | 9 Electronics10 Medical12 Vehicles+4 | Registered | 2010 |
| PRENATAL 0732587 · TMA478966 | an individual | 3 Cosmetics4 Oils6 Metal+11 | Registered | 1997 |
| PRANDASE 0720710 · TMA454542 | Bayer Intellectual Property GmbH | 5 Pharmaceuticals | Registered | 1996 |