| PERSPIREX 0529493 · TMA311095 | an individual | 3 Cosmetics | Registered | 1986 |
| PROSPEX 1943279 · TMA1148325 | Seiko Group Kabushiki Kaisha t/a Seiko Group Corporation | 9 Electronics | Registered | 2022 |
| PERSEEV 1934862 · TMA1152507 | Perseev, LLC | 9 Electronics38 Telecommunications | Registered | 2022 |
| PROSPEX 1721032 · TMA1029728 | LUCENT LIGHTING LIMITED | 11 Lighting37 Construction42 Science | Registered | 2019 |
| PROSPEX 1649404 · TMA895644 | Seiko Group Kabushiki Kaisha t/a Seiko Group Corporation | 14 Jewellery | Registered | 2015 |
| PERSPECTA 1991636 · TMA1281850 | PERSPECTA TRUST LLC | 35 Advertising36 Finance45 Legal | Registered | 2025 |
| POWERSPEC 1746419 · TMA965823 | Cummins Inc. | 9 Electronics42 Science | Registered | 2017 |
| POWERSPEC 0742050 · TMA474800 | Genlyte Thomas Group LLC | 11 Lighting | Registered | 1997 |
| PRRSFLEX 1928947 · TMA1154616 | Boehringer Ingelheim Vetmedica GmbH | 5 Pharmaceuticals | Registered | 2022 |
| PURASPEC 0636996 · TMA412487 | Johnson Matthey Public Limited Company | 1 Chemicals40 Treatment | Registered | 1993 |
| POWERSPEED 1828185 · TMA1023722 | Midea Group Co., Ltd. | 7 Machines | Registered | 2019 |
| PERSPECSYS 1600271 · TMA892523 | CA, Inc. | 9 Electronics42 Science | Registered | 2014 |
| PERSPEKTIV 1378248 · TMA759544 · design | an individual | 3 Cosmetics9 Electronics10 Medical+7 | Registered | 2010 |
| PERSPECTUS 2116523 | PERSPECTUS, INC. | 9 Electronics10 Medical41 Education+2 | Pending | 2021 |
| PRSVE 2264522 · TMA1283406 | PRSVE Inc. | 18 Leather | Registered | 2025 |
| PROSPEK 1838042 · TMA1007644 | 1266881 BC LTD | 9 Electronics | Registered | 2018 |
| PROSPEC 1836530 · TMA1072693 | Prospec Limited | 6 Metal9 Electronics11 Lighting+3 | Registered | 2020 |
| PROSPEC 1832904 · TMA1087986 | PRAXAIR TECHNOLOGY, INC. | 1 Chemicals6 Metal9 Electronics+3 | Registered | 2020 |
| PERCYFX 1517596 · TMA831152 | PERCY 3DMEDIA INC. | 9 Electronics | Registered | 2012 |
| PROSPEC 1508628 · TMA859750 | Pure Fishing, Inc. | 28 Toys | Registered | 2013 |
| PROSPER 2195742 | an individual | 5 Pharmaceuticals | Pending | 2022 |
| PROSPEC+ 2172825 | GRI ENGINEERING & DEVELOPMENT, LLC | 12 Vehicles | Pending | 2022 |
| PROSPEC 2172629 | GRI ENGINEERING & DEVELOPMENT, LLC | 12 Vehicles | Pending | 2022 |
| PEERSPACE 2177472 · TMA1284412 | PEERSPACE, INC. | 9 Electronics36 Finance42 Science | Registered | 2025 |
| PERSEVERE 2129507 · TMA1174028 | Manscaped, LLC | 3 Cosmetics | Registered | 2023 |