| ODEA 2188378 · TMA1232682 · design | ZHEJIANG ODEAR SPORTS GOODS CO.LTD | 28 Toys | Registered | 2024 |
| ODEA 2205502 · design | ODEA LIMITED PARTNERSHIP | 36 Finance37 Construction | Pending | 2022 |
| ODEA 2205500 | ODEA LIMITED PARTNERSHIP | 36 Finance37 Construction | Pending | 2022 |
| ODE 2131357 · TMA1223692 | Fellow Industries Inc. | 7 Machines | Registered | 2024 |
| ODE 1754018 · TMA965651 | MillerKnoll, Inc. | 11 Lighting | Registered | 2017 |
| OID 0844805 · TMA501910 | OUTSTANDING INVESTOR DIGEST, INC. | 16 Paper | Registered | 1998 |
| ODA 0713500 · TMA449747 | Chevron Intellectual Property LLC (a Delaware limited liability company) | 1 Chemicals4 Oils | Registered | 1995 |
| OUDEW 2280719 · design | WUYI OUDE CAR ACCESSORIES CO.LTD | 21 Housewares | Pending | 2023 |
| OIDD 0972023 | Owner not shown | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2005 |
| OUTDEYA 2108470 · TMA1159427 | Mitsubishi Tanabe Pharma Corporation | 5 Pharmaceuticals | Registered | 2023 |
| ODAYA 2212499 · TMA1223307 | AGENCE TINGG INC. | 4 Oils5 Pharmaceuticals10 Medical | Registered | 2024 |
| Otai 2211794 · TMA1243016 | Huizhou Outai Home Furnishing Co., Ltd. | 24 Textiles | Registered | 2024 |
| OTWD 2205719 · TMA1257868 · design | Off The Wall Displays Inc. | 11 Lighting20 Furniture | Registered | 2024 |
| Oduio 2187071 · TMA1223206 | Shenzhen Xingaichen Trading CO. LTD. | 9 Electronics14 Jewellery28 Toys | Registered | 2024 |
| ÖÖD 2173232 · TMA1256285 · design | an individual | 19 Building43 Restaurants | Registered | 2024 |
| OT 2167815 · TMA1277370 · design | OMNITRANS INC. | 16 Paper35 Advertising | Registered | 2024 |
| OUTDO 2152766 · TMA1188831 · design | XIAMEN MEGA KINGDOM TECHNOLOGY CO. LTD. | 9 Electronics | Registered | 2023 |
| OUADO 2128662 · TMA1208563 | an individual | 25 Clothing | Registered | 2023 |
| OTHA 2106260 · TMA1176627 | 6594409 canada inc | 9 Electronics | Registered | 2023 |
| ODDO 2105086 · TMA1196555 | an individual | 32 Beer33 Wine | Registered | 2023 |
| Oath 2087604 · TMA1170127 | HIGHBAR ENTERPRISES LTD. | 5 Pharmaceuticals | Registered | 2023 |
| ÖÖD 2084116 · TMA1247840 · design | an individual | 19 Building | Registered | 2024 |
| OTE 2081410 · TMA1174692 | OTE Household Appliances (Shenzhen) Co. Ltd | 7 Machines11 Lighting | Registered | 2023 |
| O8T 2077417 · TMA1204893 | Omniscient Neurotechnology Pty Limited | 9 Electronics42 Science | Registered | 2023 |
| OTE 2076360 · TMA1143844 | Owner not shown | 25 Clothing35 Advertising | Registered | 2022 |