| OKE 1815926 · TMA1163861 | OKE Group GmbH | 6 Metal9 Electronics10 Medical+10 | Registered | 2023 |
| OKK 2256870 · TMA1276298 · design | OKK INTERNATIONAL (HONG KONG) CO. LIMITED | 34 Tobacco | Registered | 2024 |
| OKG 2254704 · TMA1273110 | Shanghai NVSMART Technology Co. Ltd. | 6 Metal9 Electronics17 Rubber | Registered | 2024 |
| OK 2253930 · TMA1273003 · design | Astral IP Enterprise Ltd. | 9 Electronics | Registered | 2024 |
| OSEE 2239668 · TMA1259966 · design | Osee Technology Co. Ltd. | 9 Electronics | Registered | 2024 |
| Oaksea 2194438 · TMA1235104 | Shenzhen Feituo Tianxia Trading Co. Ltd. | 21 Housewares | Registered | 2024 |
| OSEE 2175255 · TMA1259445 · design | Osee Technology Co. Ltd. | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2024 |
| OKKEAI 2132661 · TMA1194829 | Ankang Haohan Trading Co. Ltd. | 16 Paper | Registered | 2023 |
| OK 2056620 · TMA1172038 · design | OK Systems Limited | 9 Electronics42 Science | Registered | 2023 |
| OOSH 2034313 · TMA1273617 | ZURU (Singapore) Pte. Ltd | 28 Toys | Registered | 2024 |
| Ozey 2022126 · TMA1132291 | an individual | 41 Education | Registered | 2022 |
| OOKEOO 1951852 · TMA1224735 · design | OOKEOO INC | 34 Tobacco | Registered | 2024 |
| OK 1943765 · TMA1204527 · design | an individual | 7 Machines9 Electronics12 Vehicles | Registered | 2023 |
| OGUH 1934340 · TMA1096961 · design | Hugo Boss Trade Mark Management GmbH & Co. KG | 3 Cosmetics | Registered | 2021 |
| OK 1929644 · TMA1119190 · design | Okeydokey LLC | 43 Restaurants | Registered | 2022 |
| OSEA 1921695 · TMA1109904 | an individual | 3 Cosmetics | Registered | 2021 |
| OGEE 1920991 · TMA1143242 | Ogee, Inc. | 3 Cosmetics5 Pharmaceuticals35 Advertising | Registered | 2022 |
| OGUH 1917718 · TMA1121287 · design | Hugo Boss Trade Mark Management GmbH & Co. KG | 18 Leather25 Clothing35 Advertising | Registered | 2022 |
| OGUH 1917716 · TMA1121286 · design | Hugo Boss Trade Mark Management GmbH & Co. KG | 18 Leather25 Clothing35 Advertising | Registered | 2022 |
| OKYO 1910137 · TMA1110915 | OKYO Pharma Corporation | 5 Pharmaceuticals42 Science | Registered | 2021 |
| OKO 1910081 · TMA1106408 | Ecoation Innovative Solutions Inc. | 12 Vehicles | Registered | 2021 |
| OAKE 1872757 · TMA1152539 | Macy's Merchandising Group, Inc. | 20 Furniture24 Textiles | Registered | 2022 |
| OKZU 1865374 · TMA1023632 · design | SHENZHEN OKZU TECHNOLOGY CO. LIMITED | 9 Electronics | Registered | 2019 |
| OES 1854627 · TMA1091293 | OES Inc. | 9 Electronics42 Science | Registered | 2021 |
| OKO 1836037 · TMA1017529 | OKO Bagels Inc. | 29 Meat30 Coffee35 Advertising+1 | Registered | 2019 |