| OBITLINK 1484236 · TMA829088 | Batesville Services, LLC (an Indiana limited liability company) | 38 Telecommunications45 Legal | Registered | 2012 |
| OPTILINK 1733639 · TMA1026359 | DePuy Synthes, Inc. | 10 Medical | Registered | 2019 |
| OPDUALAG 2235043 · TMA1244565 · design | Owner not listed | 5 Pharmaceuticals | Registered | 2024 |
| OPTALITY 2173028 · TMA1205448 | Digiatech, LLC | 9 Electronics35 Advertising36 Finance+2 | Registered | 2023 |
| OPTELLO 2120725 · TMA1185335 | CyberCoders, Inc. | 35 Advertising42 Science | Registered | 2023 |
| OPDUALAG 2091939 · TMA1211786 · design | BRISTOL-MYERS SQUIBB COMPANY | 5 Pharmaceuticals44 Medical | Registered | 2023 |
| OptiLake 2067132 · TMA1197556 | OASE GmbH | 1 Chemicals | Registered | 2023 |
| OBDIELA 1993514 · TMA1148757 | GENFIT | 5 Pharmaceuticals | Registered | 2022 |
| OPTOOL 1925946 · TMA1117914 | Daikin Industries, Ltd. | 1 Chemicals2 Paints4 Oils+1 | Registered | 2022 |
| OPDUALAG 1887232 · TMA1059123 | BRISTOL-MYERS SQUIBB COMPANY (A DELAWARE CORPORATION) | 5 Pharmaceuticals | Registered | 2019 |
| OPDUOLAG 1887230 · TMA1059122 | BRISTOL-MYERS SQUIBB COMPANY (A DELAWARE CORPORATION) | 5 Pharmaceuticals | Registered | 2019 |
| OVdialogue 1856876 · TMA1019491 | Owner not shown | 38 Telecommunications42 Science | Registered | 2019 |
| OPTEL 1836650 · TMA1002526 · design | Optel Vision Inc. | 7 Machines9 Electronics39 Transport+3 | Registered | 2018 |
| OptiLight 1835360 · TMA1060011 | Pilkington Group Limited | 9 Electronics21 Housewares | Registered | 2019 |
| OPTILUME 1828682 · TMA1005723 | Urotronic Inc. | 10 Medical | Registered | 2018 |
| OPTILITE 1815130 · TMA1056533 | CWI, LLC | 11 Lighting | Registered | 2019 |
| OPTEL 1791471 · TMA992516 | Optel Vision Inc. | 7 Machines9 Electronics39 Transport+3 | Registered | 2018 |
| OPTOLONG 1753507 · TMA965534 · design | Yulong Optics Co. Ltd. | 9 Electronics | Registered | 2017 |
| OPTILINE 1694039 · TMA1051210 | an individual | 5 Pharmaceuticals10 Medical | Registered | 2019 |
| OPTILINER 1660665 · TMA961201 | Owens Corning Intellectual Capital LLC | 6 Metal17 Rubber20 Furniture+1 | Registered | 2017 |
| OPTILITE 1616902 · TMA875958 | The Binding Site Group, Ltd. | 9 Electronics10 Medical | Registered | 2014 |
| OPTELIAN 1593086 · TMA914669 · design | Optelian Access Networks Corporation | 9 Electronics37 Construction41 Education+1 | Registered | 2015 |
| OPTILED 1500995 · TMA869644 · design | HUIZHOU LIGHT ENGINE LTD | 9 Electronics11 Lighting | Registered | 2014 |
| OPTIHEALTH 1494158 · TMA825515 | Owner not shown | 31 Fresh | Registered | 2012 |
| OptiLucent 1453612 · TMA776716 | ZUMTOBEL LIGHTING GMBH | 11 Lighting | Registered | 2010 |