| OPM 2010121 · TMA1115052 | Witron Logistik + Informatik GmbH | 7 Machines | Registered | 2021 |
| OPM 1895886 · TMA1082414 | Owner not shown | 41 Education | Registered | 2020 |
| OBM 1826715 · TMA1024107 | MAFTEC Co., Ltd. | 1 Chemicals3 Cosmetics5 Pharmaceuticals+8 | Registered | 2019 |
| OBM 2139752 | DewertOkin Technology Group Co., Ltd. | 6 Metal7 Machines9 Electronics+1 | Pending | 2021 |
| ouffun 2231268 · TMA1253953 | Shenzhen Aotuojing Technology Co.Ltd. | 9 Electronics | Registered | 2024 |
| Obeamiu 2222292 · TMA1251106 | shen zhen shi si mi rui ke ji Co., Ltd. | 9 Electronics | Registered | 2024 |
| OPENN 2199272 · TMA1231699 | Openn Tech Pty Ltd | 9 Electronics35 Advertising36 Finance | Registered | 2024 |
| OPENN 2199271 · TMA1233918 · design | Openn Tech Pty Ltd | 9 Electronics35 Advertising36 Finance | Registered | 2024 |
| OPEN 2195580 · TMA1252373 | an individual | 16 Paper28 Toys | Registered | 2024 |
| OVUM 2183240 · TMA1233491 | an individual | 22 Ropes | Registered | 2024 |
| OPPEIN 2177418 · TMA1250967 · design | Oppein Home Group Inc. | 6 Metal11 Lighting19 Building+2 | Registered | 2024 |
| ovan 2077867 · TMA1232038 | an individual | 32 Beer | Registered | 2024 |
| OVEN 360 1922237 · TMA1116439 | 2556563 Ontario Inc. | 35 Advertising39 Transport41 Education+1 | Registered | 2021 |
| OVNI 1884322 · TMA1062936 | Owner not shown | 9 Electronics12 Vehicles | Registered | 2019 |
| OFPN 1863415 · TMA1100016 | REGISTERED NURSES ASSOCIATION OF ONTARIO | 9 Electronics16 Paper35 Advertising+5 | Registered | 2021 |
| OHPEN 1860299 · TMA1093674 | an individual | 9 Electronics35 Advertising36 Finance+2 | Registered | 2021 |
| OPNME 1859949 · TMA1043927 | Boehringer lngelheim International GmbH | 38 Telecommunications44 Medical | Registered | 2019 |
| OBEONE 1793873 · TMA1045183 | Owner not shown | 5 Pharmaceuticals10 Medical | Registered | 2019 |
| OPN 1754913 · TMA1044586 · design | an individual | 7 Machines11 Lighting16 Paper+3 | Registered | 2019 |
| OBEN 1730598 · TMA945070 | Axilene Inc. | 1 Chemicals | Registered | 2016 |
| OPHEMY 1725712 · TMA994655 · design | an individual | 9 Electronics42 Science | Registered | 2018 |
| OPN 1713493 · TMA1037436 | an individual | 6 Metal7 Machines16 Paper+4 | Registered | 2019 |
| OHPEN 1685010 · TMA1034076 | an individual | 9 Electronics35 Advertising36 Finance+1 | Registered | 2019 |
| OPN 1673913 · TMA924708 | IMS International Marketing Services GmbH | 35 Advertising36 Finance41 Education | Registered | 2016 |
| OPENAI 1649697 · TMA945586 | Citigroup Inc. | 36 Finance | Registered | 2016 |