| OOU 2246973 · TMA1265891 | Owner not listed | 8 Hand | Registered | 2024 |
| OHO 2220352 · TMA1267003 | AAA Heidelberg Inc. | 1 Chemicals3 Cosmetics5 Pharmaceuticals+12 | Registered | 2024 |
| O4U 2179325 · TMA1266906 | an individual | 5 Pharmaceuticals32 Beer | Registered | 2024 |
| OH!! 2176497 · TMA1179604 · design | SAPIENTIA TECHNOLOGY LLC | 29 Meat30 Coffee | Registered | 2023 |
| OUU 2095932 · TMA1172623 | Xiamihezi(Xiamen) culture media Co. Ltd. | 27 Carpets | Registered | 2023 |
| OH. 2089000 · TMA1211760 · design | an individual | 3 Cosmetics | Registered | 2023 |
| OHA 2048384 · TMA1273719 | Oha Honey Limited Partnership | 30 Coffee | Registered | 2024 |
| OH 1997676 · TMA1153783 · design | Ole Henriksen of Denmark, Inc. | 3 Cosmetics | Registered | 2022 |
| OÙ 1923178 · TMA1105434 · design | ORGANISATION COMMUNICATIONS ET SOCIÉTÉ OCS INC. | 38 Telecommunications41 Education42 Science | Registered | 2021 |
| OU 1862373 · TMA1076573 · design | Target Brands, Inc. | 35 Advertising | Registered | 2020 |
| OU 1862372 · TMA1076572 · design | Target Brands, Inc. | 9 Electronics27 Carpets28 Toys | Registered | 2020 |
| OU 1862371 · TMA1084066 · design | Target Brands, Inc. | 9 Electronics | Registered | 2020 |
| OU 1862370 · TMA1084068 · design | Target Brands, Inc. | 9 Electronics | Registered | 2020 |
| OU 1862369 · TMA1076566 · design | Target Brands, Inc. | 18 Leather24 Textiles25 Clothing | Registered | 2020 |
| OU 1862368 · TMA1084065 · design | Target Brands, Inc. | 16 Paper | Registered | 2020 |
| OU 1862367 · TMA1084067 · design | Target Brands, Inc. | 14 Jewellery16 Paper | Registered | 2020 |
| OU 1862366 · TMA1084064 · design | Target Brands, Inc. | 3 Cosmetics8 Hand | Registered | 2020 |
| OHH!! 1695622 · TMA932119 · design | JC-Sunny International Co. Ltd. | 18 Leather | Registered | 2016 |
| OHW? 1682372 · TMA942643 | SUNGILL LIMITED | 18 Leather25 Clothing | Registered | 2016 |
| OH 1633922 · TMA909914 · design | Ole Henriksen of Denmark, Inc. a California corporation | 3 Cosmetics | Registered | 2015 |
| OH 1614519 · TMA874077 · design | BALÉCO INC. | 3 Cosmetics5 Pharmaceuticals30 Coffee | Registered | 2014 |
| OH 1542657 · TMA885944 · design | an individual | 43 Restaurants44 Medical | Registered | 2014 |
| OHE 1537869 · TMA842681 · design | OH Environmental Inc. | 35 Advertising37 Construction40 Treatment+4 | Registered | 2013 |
| OHA 1456684 · TMA835030 | The Ontario Hockey Association | 35 Advertising41 Education | Registered | 2012 |
| OHA 1220034 · TMA637268 | ONTARIO HOSPITAL ASSOCIATION (AN ONTARIO NONPROFIT CORPORATION) | 35 Advertising41 Education44 Medical | Registered | 2005 |