| OPENPEMS 2314613 | Owner not listed | 42 Science | Pending | 2024 |
| openBOS 2123731 · TMA1181867 | Busch-Jaeger Elektro GmbH | 9 Electronics | Registered | 2023 |
| OPENVPN 2248948 | OPENVPN, INC. | 9 Electronics | Pending | 2023 |
| openfast 2132250 · TMA1246183 | SHOKZ HOLDING LIMITED | 9 Electronics | Registered | 2024 |
| OPENVINO 1925579 · TMA1111163 · design | INTEL CORPORATION | 9 Electronics | Registered | 2021 |
| OPENVINO 1925578 · TMA1111162 | INTEL CORPORATION | 9 Electronics | Registered | 2021 |
| OpenView 1589091 · TMA883545 | an individual | 6 Metal19 Building | Registered | 2014 |
| OPENVIEW 1219117 · TMA768542 | an individual | 9 Electronics16 Paper | Registered | 2010 |
| OPENBASS 2245806 · design | Owner not listed | 9 Electronics | Pending | 2022 |
| OPENPASS 2052534 | The Trade Desk, Inc. | 9 Electronics35 Advertising42 Science | Pending | 2020 |
| OPENVISION 1671831 · TMA914149 | QSA Global Inc. | 9 Electronics | Registered | 2015 |
| Openfit 2069724 · TMA1198595 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2023 |
| OPENFIT 1944149 · TMA1211535 | OPENFIT, LLC | 41 Education | Registered | 2023 |
| OPENBET 1904636 · TMA1212653 | OpenBet Limited | 9 Electronics38 Telecommunications41 Education | Registered | 2023 |
| OPENPHA 1814056 · TMA992779 | ACM Risk Sciences & Development Inc. | 9 Electronics42 Science | Registered | 2018 |
| OpenPBX 1757888 · TMA969165 | an individual | 38 Telecommunications | Registered | 2017 |
| OPENBET 1487388 · TMA970827 · design | OpenBet Limited | 9 Electronics28 Toys38 Telecommunications+2 | Registered | 2017 |
| Openbox 1342542 · TMA707667 | Hi-Tech Service Group Ltd. | 35 Advertising | Registered | 2008 |
| OPENIPO 1056393 · TMA562628 | W.R. Hambrecht + Co., Inc. | 9 Electronics16 Paper35 Advertising+5 | Registered | 2002 |
| OPENBET 2172173 · design | OpenBet Limited | 9 Electronics38 Telecommunications41 Education | Pending | 2022 |
| OPEN2VIEW 1308856 · TMA704655 | O 2 V IP Trustees Limited | 35 Advertising36 Finance37 Construction+1 | Registered | 2008 |
| OPENPATHS 2334128 | Bentley Systems Incorporated | 9 Electronics42 Science | Pending | 2024 |
| OPENBISHENG 2152802 · TMA1207572 | HUAWEI TECHNOLOGIES CO., LTD. | 9 Electronics42 Science | Registered | 2023 |
| Openmove 2059255 · TMA1198561 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2023 |
| OPENBIKE 2056480 · TMA1198551 | SHOKZ (SINGAPORE) PTE. LTD. | 9 Electronics | Registered | 2023 |