| opensrci 1990414 · TMA1126966 | an individual | 36 Finance | Registered | 2022 |
| OPENSURE 1771418 · TMA1032251 | Boston Scientific Scimed, Inc. | 10 Medical | Registered | 2019 |
| OPENSOUND 2151099 · TMA1221351 · design | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2024 |
| opensnow 2132268 · TMA1232143 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2024 |
| OPENSAFE 2131045 · TMA1239471 | SHOKZ HOLDING LIMITED | 10 Medical | Registered | 2024 |
| OPENSEE 2106460 · TMA1268237 | OPENSEE | 9 Electronics35 Advertising36 Finance+1 | Registered | 2024 |
| OPENSEA 2099944 · TMA1201319 | Greensea Systems, Inc. | 9 Electronics | Registered | 2023 |
| openswim 2056371 · TMA1198550 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2023 |
| OpenComm 2052258 · TMA1198534 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2023 |
| OPENSEA 1945585 · TMA1223347 | Ozone Networks, Inc. | 35 Advertising42 Science | Registered | 2024 |
| OPENSKY 1915772 · TMA1106868 | Wing Aviation LLC | 9 Electronics12 Vehicles39 Transport+1 | Registered | 2021 |
| OPENCAPI 1817988 · TMA1068290 | Compute Express Link Consortium, Inc. | 9 Electronics16 Paper35 Advertising | Registered | 2020 |
| OPENSKY 1813861 · TMA995132 | Corteva Agriscience LLC | 5 Pharmaceuticals | Registered | 2018 |
| OPENSWAN 1559719 · TMA873857 · design | Xelerance Corporation | 9 Electronics42 Science | Registered | 2014 |
| OPENSET 1393974 · TMA755566 | Owner not shown | 9 Electronics | Registered | 2009 |
| OVENSUBS 0831225 · TMA489862 | GRINNER'S FOOD SYSTEMS LIMITED | 30 Coffee43 Restaurants | Registered | 1998 |
| OPENSKY 2348269 | Owner not listed | 35 Advertising36 Finance37 Construction+1 | Pending | 2024 |
| OpenSPR 2315273 | Nicoya Lifesciences, Inc. | 1 Chemicals42 Science | Pending | 2024 |
| OPENSEA 2178940 | Ozone Networks, Inc. | 6 Metal9 Electronics14 Jewellery+10 | Pending | 2022 |
| OpenSPR 2015127 | Nicoya Lifesciences, Inc. | 9 Electronics | Pending | 2020 |
| OPENSESAME 2000812 · TMA1103809 | OPENSESAME INC. | 35 Advertising | Registered | 2021 |
| OPENSCOPIC 1822131 · TMA1018840 | Richard S. Boorman Professional Corporation | 44 Medical | Registered | 2019 |
| OPENSPIRIT 0885397 · TMA549474 · design | Cloud Software Group, Inc. | 9 Electronics | Registered | 2001 |
| openspeed 2132262 · TMA1232141 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2024 |
| OPENSPORT 2101702 · TMA1173887 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2023 |