| OutFest 2186891 · TMA1233519 | Owner not shown | 41 Education | Registered | 2024 |
| OUTFOX 2175568 · TMA1226225 | Peticular LLC | 18 Leather | Registered | 2024 |
| OUTBOSS 2111220 · TMA1192692 | an individual | 16 Paper21 Housewares | Registered | 2023 |
| OTPOS 2093810 · TMA1216044 | an individual | 9 Electronics | Registered | 2023 |
| OUTBACK 2092781 · TMA1209554 | U.M. KOGYO INC. | 8 Hand | Registered | 2023 |
| OUTPOST 1942733 · TMA1223991 | OUTPOST INCORPORATED | 9 Electronics16 Paper18 Leather+2 | Registered | 2024 |
| Oddvocado 1937319 · TMA1116828 | Del Monte International GmbH | 31 Fresh | Registered | 2022 |
| OUTBOX 1881356 · TMA1089954 · design | Outbox Technology CRB Inc. | 9 Electronics35 Advertising41 Education+1 | Registered | 2020 |
| OTOBOX 1830228 · TMA1011662 | UNIMAX LTÉE | 35 Advertising37 Construction | Registered | 2018 |
| OUTVESTOR 1817284 · TMA1047071 | an individual | 36 Finance | Registered | 2019 |
| OUTVESTING 1799102 · TMA992784 | an individual | 36 Finance | Registered | 2018 |
| OUTVEST 1799097 · TMA992775 | an individual | 36 Finance | Registered | 2018 |
| OATBOX 1746956 · TMA1007653 | OATBOX GROUP INC. | 29 Meat30 Coffee31 Fresh+1 | Registered | 2018 |
| ODEFSEY 1718869 · TMA992305 | an individual | 5 Pharmaceuticals | Registered | 2018 |
| OTFS 1709950 · TMA1025977 | Cohere Technologies, Inc. | 9 Electronics42 Science | Registered | 2019 |
| OUTPOST 1696993 · TMA922311 | Owner not shown | 35 Advertising | Registered | 2015 |
| OUTBACK 1690450 · TMA974479 | OUTBACK FLASHLIGHTS, LLC | 9 Electronics11 Lighting | Registered | 2017 |
| OTOBOOKS 1677042 · TMA971436 · design | THINKINGDOM MEDIA GROUP LIMITED | 9 Electronics16 Paper28 Toys+2 | Registered | 2017 |
| OTAFEST 1676512 · TMA964645 | Owner not shown | 9 Electronics14 Jewellery16 Paper+5 | Registered | 2017 |
| OUTBACK 1596534 · TMA849080 | Cardinal Health 529, LLC | 10 Medical | Registered | 2013 |
| ottobock. 1541513 · TMA886509 | Otto Bock Healthcare GmbH | 1 Chemicals3 Cosmetics5 Pharmaceuticals+17 | Registered | 2014 |
| OUTPOST 1531473 · TMA876211 | Light Iron Digital, LLC (a Delaware Limited Liability Company) | 9 Electronics | Registered | 2014 |
| OUTBOX 1410569 · TMA833747 · design | Outbox Technology CRB Inc. | 9 Electronics41 Education42 Science | Registered | 2012 |
| OUTBOX 1410567 · TMA833749 | Outbox Technology CRB Inc. | 9 Electronics41 Education42 Science | Registered | 2012 |
| OTPXS 1384843 · TMA745778 | an individual | 9 Electronics | Registered | 2009 |