| OSIRIS 1536094 · TMA878578 | Owner not shown | 9 Electronics40 Treatment42 Science | Registered | 2014 |
| OSIRIS 1374724 · TMA746368 | Owner not shown | 9 Electronics38 Telecommunications42 Science | Registered | 2009 |
| OSIRIS 1374723 · TMA747429 · design | Owner not shown | 9 Electronics38 Telecommunications42 Science | Registered | 2009 |
| OSIRIS 1370216 · TMA781626 | Specsavers Optical Superstores Limited | 9 Electronics | Registered | 2010 |
| OSIRIS 1311542 · TMA821125 · design | Osiris Therapeutics, Inc. | 9 Electronics | Registered | 2012 |
| OSIRIS 1097757 · TMA574028 · design | California Board Sports, Inc. (a California Corporation) | 9 Electronics16 Paper18 Leather+3 | Registered | 2003 |
| OSIRIS 1976374 | Specsavers Optical Superstores Limited | 9 Electronics | Pending | 2019 |
| OSIRIX 1721499 · TMA1000071 · design | Pixmeo | 9 Electronics10 Medical35 Advertising+2 | Registered | 2018 |
| Ozyris 2290651 | an individual | 3 Cosmetics | Pending | 2023 |
| oxworks 2107442 · TMA1175932 | an individual | 6 Metal | Registered | 2023 |
| OXYRASE 0853105 · TMA501551 | OXYRASE, INC. | 1 Chemicals5 Pharmaceuticals | Registered | 1998 |
| OXYRASE 0853096 · TMA501553 · design | OXYRASE, INC. | 1 Chemicals | Registered | 1998 |
| OCHURG 2246584 · TMA1265806 · design | an individual | 25 Clothing | Registered | 2024 |
| OSRSR 2078292 · TMA1178921 | an individual | 10 Medical | Registered | 2023 |
| OKRASA 1983237 · TMA1130257 | The Hoffman Group LLC | 12 Vehicles25 Clothing | Registered | 2022 |
| OOCARES 1946736 · TMA1116524 | an individual | 3 Cosmetics5 Pharmaceuticals35 Advertising+5 | Registered | 2021 |
| OKRX 1931823 · TMA1126637 | Leven Systems Inc. | 42 Science44 Medical | Registered | 2022 |
| OZARK 1779485 · TMA1053570 | MRC II Distribution Company L.P. | 9 Electronics28 Toys41 Education | Registered | 2019 |
| OCRUZO 1769547 · TMA978532 | Celgene Corporation | 5 Pharmaceuticals | Registered | 2017 |
| OKAROC 1619405 · TMA887668 | OKAPLY INDUSTRIES LTD. | 9 Electronics14 Jewellery16 Paper+5 | Registered | 2014 |
| OCRCVM 1405367 · TMA760078 | Owner not shown | 41 Education42 Science | Registered | 2010 |
| OZARK 1289201 · TMA710315 | Stentor Music Co. Ltd. | 15 Musical | Registered | 2008 |
| OXYRESISTAN 1180082 · TMA717680 | Owner not shown | 3 Cosmetics | Registered | 2008 |
| OXARC 0851798 · TMA524239 | OXARC, INC. | 1 Chemicals4 Oils9 Electronics+6 | Registered | 2000 |
| OZARKA 0849943 · TMA503026 | BlueTriton Brands, Inc. | 32 Beer | Registered | 1998 |