| OPTIMAL 1632959 · TMA889558 | NORTH LOCK LLC | 32 Beer | Registered | 2014 |
| OPTIMAL 1155761 · TMA610509 · design | LKQ Europe GmbH | 7 Machines12 Vehicles | Registered | 2004 |
| Optimal Nu 2284729 | NOURISH HEALTHCARE INC | 3 Cosmetics5 Pharmaceuticals | Pending | 2023 |
| OPTIMAL MRM 1590834 · TMA866091 · design | Optimal Market Risk Management Advisors Inc. | 16 Paper36 Finance41 Education | Registered | 2013 |
| OPTIMAL ITC 0818499 · TMA485751 · design | DELOITTE LLP | 9 Electronics | Registered | 1997 |
| OPTIMAL TEMP 1654366 · TMA1022753 · design | an individual | 8 Hand | Registered | 2019 |
| OPTIMAL CARE 1406865 · TMA806266 | HILL'S PET NUTRITION, INC. | 31 Fresh | Registered | 2011 |
| OPTIMAL BLUE 1973753 | Optimal Blue, LLC | 42 Science | Pending | 2019 |
| OPTIMAL ACRES 1511195 · TMA848619 | United Agri Products Canada Inc. | 44 Medical | Registered | 2013 |
| OPTIMAL COVER 1065223 · TMA584407 | SHISEIDO COMPANY, LTD. | 3 Cosmetics | Registered | 2003 |
| T-FAL OPTIMAL 0817311 · TMA487778 · design | Owner not shown | 21 Housewares | Registered | 1998 |
| BRAND OPTIMAL 2117523 | Hotspex Media Inc. | 35 Advertising42 Science | Pending | 2021 |
| PURELY OPTIMAL 1978796 · TMA1190283 | Purely Optimal Nutrition Inc. | 5 Pharmaceuticals | Registered | 2023 |
| Optimal Travel 1629607 · TMA900177 | Optimal Financial Centre Inc. | 36 Finance | Registered | 2015 |
| OPTIMAL LIVING 1361666 · TMA858085 | CR LICENSE, LLC, a limited liability Arizona corporation | 41 Education43 Restaurants44 Medical | Registered | 2013 |
| OPTIMAL LIVING 1319545 · TMA832679 | CR LICENSE, LLC, a limited liability Arizona corporation | 41 Education | Registered | 2012 |
| OPTIMAL NATURE 1258851 · TMA679391 · design | Canada Optimal Nature Inc. | 5 Pharmaceuticals35 Advertising | Registered | 2007 |
| SCOTIA OPTIMAL 1160330 · TMA612842 | THE BANK OF NOVA SCOTIA | 9 Electronics16 Paper36 Finance | Registered | 2004 |
| OPTIMAL PERENNI 2373352 · design | Dongguan Guangmao Technology Co. LTD. | 9 Electronics42 Science | Pending | 2024 |
| OPTIMAL CONTROL 2335943 | New Balance Athletics, Inc. | 25 Clothing | Pending | 2024 |
| OPTIMAL PAYMENTS 1550853 · TMA848948 · design | Optimal Payments Plc. | 36 Finance | Registered | 2013 |
| OPTIMAL PAYMENTS 1537927 · TMA842710 | Optimal Payments Plc. | 36 Finance | Registered | 2013 |
| Optimal Velocity 2360593 | Opreto Corporation | 42 Science | Pending | 2024 |
| OPTIMAL SELECTION 1659190 · TMA975228 | Kinship Partners, Inc. | 5 Pharmaceuticals9 Electronics10 Medical | Registered | 2017 |
| OPTIMAL WHITENING 1612195 · TMA891814 | RANIR, LLC | 21 Housewares | Registered | 2014 |