| OOOHB 1034644 · TMA558559 · design | Private Joint Stock Company "Obolon" | 2 Paints5 Pharmaceuticals20 Furniture+5 | Registered | 2002 |
| OP 2236182 · TMA1259739 · design | Flower Love Canada Corp. | 30 Coffee31 Fresh32 Beer+1 | Registered | 2024 |
| OYIB 2228887 · TMA1252846 | Chengdu Zuoanhuakai Trading Co. Ltd. | 9 Electronics | Registered | 2024 |
| OYF 2213913 · TMA1241827 · design | PLX Scientific Inc. | 11 Lighting | Registered | 2024 |
| OBA 2208336 · TMA1228461 · design | Oba Cosmetic (Xiamen) Co. Ltd. | 3 Cosmetics | Registered | 2024 |
| OFI 2199220 · TMA1264082 · design | Olam International Limited | 29 Meat30 Coffee31 Fresh | Registered | 2024 |
| OFI 2189362 · TMA1259511 · design | Olam International Limited | 35 Advertising | Registered | 2024 |
| OPVEE 2173493 · TMA1198225 | Opiant Pharmaceuticals, Inc. | 5 Pharmaceuticals | Registered | 2023 |
| OVAWA 2166641 · TMA1213490 | Dongguan Xingyu Electronic Technology Co. Ltd. | 21 Housewares | Registered | 2023 |
| Opow 2160219 · TMA1210075 | an individual | 21 Housewares | Registered | 2023 |
| Ovie 2153442 · TMA1187871 | an individual | 14 Jewellery | Registered | 2023 |
| OOHPAY 2150949 · TMA1217336 | Oohpod Limited | 9 Electronics35 Advertising | Registered | 2024 |
| OUFEI 2133062 · TMA1197881 | Shenzhen Zehao Import and Export Trade Co. Ltd. | 26 Sewing | Registered | 2023 |
| Obuy 2131861 · TMA1225135 | Olight Group Co.Ltd | 9 Electronics35 Advertising | Registered | 2024 |
| OP 2128738 · TMA1196850 | Icon DE Holdings LLC | 18 Leather | Registered | 2023 |
| OhBio 2120283 · TMA1184226 | an individual | 31 Fresh | Registered | 2023 |
| OEP 2111587 · TMA1161530 | Berkeley Lights, Inc. | 9 Electronics | Registered | 2023 |
| OOVIE 2110922 · TMA1227796 | PurCann Pharma Inc. | 3 Cosmetics5 Pharmaceuticals34 Tobacco | Registered | 2024 |
| OPPI 2110504 · TMA1190788 · design | SHEENWOO CORP. | 36 Finance | Registered | 2023 |
| OBBO 2107665 · TMA1191776 | an individual | 25 Clothing | Registered | 2023 |
| OP 2106103 · TMA1234303 | Icon DE Holdings LLC | 25 Clothing | Registered | 2024 |
| OB 2099578 · TMA1222848 · design | NUTIFOOD NUTRITION FOOD JOINT STOCK COMPANY | 5 Pharmaceuticals29 Meat30 Coffee+3 | Registered | 2024 |
| OPP 2097383 · TMA1173680 | Impact Immobilier Inc. | 12 Vehicles | Registered | 2023 |
| OBI 2096038 · TMA1172658 | EAU ZONE HUILES ET FRAGRANCES LTÉE | 10 Medical | Registered | 2023 |
| OVA 1 + 2078970 · TMA1141980 · design | Aspira Women's Health Inc. | 44 Medical | Registered | 2022 |