| OPTIPAC 1288289 · TMA790596 | an individual | 5 Pharmaceuticals10 Medical | Registered | 2011 |
| OPTIPAR 2278216 | Owner not listed | 9 Electronics11 Lighting37 Construction+1 | Pending | 2023 |
| OPTIPAP 2219726 | Fisher & Paykel Healthcare Limited | 10 Medical | Pending | 2022 |
| OPTIPATH 1681192 · TMA930760 | CGTECH, a California corporation | 9 Electronics | Registered | 2016 |
| OPTIPLAN 1585772 · TMA895903 | LECTRA | 7 Machines | Registered | 2015 |
| OPTIFADE 1458257 · TMA838107 | W.L. GORE & ASSOCIATES, INC. | 9 Electronics13 Firearms18 Leather+1 | Registered | 2012 |
| OPTIFADE 1414462 · TMA827930 · design | W.L. GORE & ASSOCIATES, INC. | 16 Paper24 Textiles25 Clothing+1 | Registered | 2012 |
| OPTIFADE 1414454 · TMA827929 | W.L. GORE & ASSOCIATES, INC. | 16 Paper24 Textiles25 Clothing+1 | Registered | 2012 |
| OPTIPATH 1088431 · TMA597787 | OFS Fitel, LLC | 9 Electronics | Registered | 2003 |
| OPTIPLAN 1012186 · TMA541064 | LECTRA | 9 Electronics | Registered | 2001 |
| OPTAPURE 2315958 | OPC Polymers LLC | 17 Rubber | Pending | 2024 |
| OptiPave 2221643 | OptiPave, LLC | 42 Science | Pending | 2022 |
| OPTIPACK 2133291 | Maple Mountain Group, Inc. | 3 Cosmetics5 Pharmaceuticals | Pending | 2021 |
| OPHTAPHARM 2272779 · design | Owner not listed | 5 Pharmaceuticals9 Electronics10 Medical+2 | Pending | 2023 |
| OPHTAPHARM 2272777 | an individual | 5 Pharmaceuticals9 Electronics10 Medical+2 | Pending | 2023 |
| Optave 2252460 · TMA1271440 | an individual | 9 Electronics35 Advertising41 Education+1 | Registered | 2024 |
| Optiva 2182917 · TMA1230374 | Shenzhen Verdewell Technology Limited | 34 Tobacco | Registered | 2024 |
| OPTIBAC 1974060 · TMA1106494 · design | Wren Laboratories Ltd | 5 Pharmaceuticals | Registered | 2021 |
| OPTAFLU 1922615 · TMA1073159 | Seqirus UK Limited | 5 Pharmaceuticals | Registered | 2020 |
| OPTIVA 1874635 · TMA1100636 | Optiva Software Limited | 9 Electronics35 Advertising36 Finance+4 | Registered | 2021 |
| OPTEVA 1864115 · TMA1061383 | GCP Applied Technologies Inc. | 1 Chemicals | Registered | 2019 |
| OPTAVIA 1783974 · TMA1031913 · design | JASON ENTERPRISES, INC. | 5 Pharmaceuticals21 Housewares28 Toys+5 | Registered | 2019 |
| OPTIBED 1766963 · TMA979801 | an individual | 20 Furniture42 Science | Registered | 2017 |
| OPTAVIA 1755527 · TMA1056329 | JASON ENTERPRISES, INC. | 5 Pharmaceuticals21 Housewares28 Toys+5 | Registered | 2019 |
| OPTIPRO 1672093 · TMA928444 | Owner not shown | 5 Pharmaceuticals | Registered | 2016 |