| OPTIMEDICAL 1359374 · TMA775230 · design | IDEXX LABORATORIES, INC. | 10 Medical | Registered | 2010 |
| OPTIONAL 2017976 · TMA1267867 · design | an individual | 25 Clothing | Registered | 2024 |
| optimel 2002380 · TMA1155956 | Melcare Medical Pty Ltd | 5 Pharmaceuticals | Registered | 2022 |
| OPTIMELT 1832905 · TMA1022757 | PRAXAIR TECHNOLOGY, INC. | 37 Construction41 Education42 Science | Registered | 2019 |
| OPTIMET 1805352 · TMA1022846 | OPTIMET CONCRETE PRODUCTS INC. a legal entity | 6 Metal19 Building | Registered | 2019 |
| OPTIMERA 1674666 · TMA915364 | an individual | 3 Cosmetics | Registered | 2015 |
| OPTIMAL 1632959 · TMA889558 | NORTH LOCK LLC | 32 Beer | Registered | 2014 |
| OPTIMET 1184526 · TMA615943 · design | Optimet Concrete Products Inc. | 6 Metal | Registered | 2004 |
| OPTIMAL 1155761 · TMA610509 · design | LKQ Europe GmbH | 7 Machines12 Vehicles | Registered | 2004 |
| OPTIMEDIA 0757638 · TMA451211 | PUBLICIS GROUPE SA | 35 Advertising36 Finance | Registered | 1995 |
| OPTIMEDIA 2308524 | an individual | 19 Building | Pending | 2024 |
| OPTIMEDIA 2308523 | an individual | 6 Metal | Pending | 2024 |
| OptimediaLabs 2037839 · TMA1140541 | Argon Technology Corporation | 9 Electronics16 Paper20 Furniture+1 | Registered | 2022 |
| Optime 2208243 · TMA1280840 | an individual | 6 Metal7 Machines26 Sewing | Registered | 2025 |
| OptiMaster 2126854 · TMA1240944 | LG Display Co., Ltd. | 9 Electronics | Registered | 2024 |
| OPTIMA 2034994 · TMA1144634 · design | Optima Contracting Limited | 6 Metal19 Building20 Furniture+1 | Registered | 2022 |
| OPTIMIST 1964304 · TMA1231872 | an individual | 25 Clothing | Registered | 2024 |
| OPTIMA 1894160 · TMA1072287 | Midea America Corp. | 7 Machines | Registered | 2020 |
| OPTIMAX 1865477 · TMA1028567 | CANADIAN BIO-SYSTEMS INC. | 5 Pharmaceuticals | Registered | 2019 |
| Optimat 1756862 · TMA955027 | MATELAS RENE INC. | 20 Furniture | Registered | 2016 |
| OPTIMIND 1745039 · TMA958076 | AlternaScript LLC | 5 Pharmaceuticals | Registered | 2016 |
| OPTIMAX 1733686 · TMA952294 | Owner not shown | 9 Electronics37 Construction42 Science | Registered | 2016 |
| OPTIMAX 1727005 · TMA940576 | Garland Canada Inc. | 2 Paints17 Rubber19 Building | Registered | 2016 |
| OPTIMAS 1721358 · TMA993313 | Optimas OE Solutions, LLC | 6 Metal17 Rubber20 Furniture+1 | Registered | 2018 |
| OPTIMA 1713786 · TMA963120 | COMPRESSION TECHNOLOGY CORPORATION | 7 Machines35 Advertising37 Construction+2 | Registered | 2017 |