| HYPROTEC 0453813 · TMA258411 | CANADA PIPE COMPANY LTD. | 6 Metal | Registered | 1981 |
| HYPROTECT 2091573 | an individual | 5 Pharmaceuticals6 Metal9 Electronics+2 | Pending | 2021 |
| HYBRITECH 0563221 · TMA333742 | HYBRITECH INCORPORATED | 5 Pharmaceuticals9 Electronics | Registered | 1987 |
| Hybritec 1668698 · TMA953116 | an individual | 7 Machines9 Electronics11 Lighting | Registered | 2016 |
| HIPERTECH 0742333 · TMA448837 | SPECIALITES HIPERTECH INC./HIPERTECH SPECIALTIES INC. | 1 Chemicals2 Paints3 Cosmetics+1 | Registered | 1995 |
| HyBryte 2372749 · TMA1217021 | Soligenix, Inc. | 5 Pharmaceuticals | Registered | 2024 |
| HYPEROTP 2055942 · TMA1162318 | Hypersecu Information Systems, INC | 9 Electronics42 Science | Registered | 2023 |
| HÉPHRÔTÉ 1992228 · TMA1124415 | Héphrôté Inc. | 3 Cosmetics9 Electronics14 Jewellery+2 | Registered | 2022 |
| HYPERTEK 1897077 · TMA1192349 | 4 Pillar Dynasty LLC (A Limited Liability Company of the state of New York) | 9 Electronics18 Leather21 Housewares+4 | Registered | 2023 |
| HYPERTET 1262971 · TMA689312 | Grifols Therapeutics LLC | 5 Pharmaceuticals | Registered | 2007 |
| HOVERTECH 1204477 · TMA630914 | an individual | 10 Medical | Registered | 2005 |
| HYPERTAC 0399388 · TMA223503 | Smiths Interconnect Americas, Inc. | 9 Electronics | Registered | 1977 |
| HYPORET 0368047 · TMA210120 | ELI LILLY AND COMPANY | 5 Pharmaceuticals10 Medical | Registered | 1975 |
| HYPORET 2152191 | ELI LILLY AND COMPANY | 5 Pharmaceuticals10 Medical | Pending | 2021 |
| HyperTest 2138066 | Owner not shown | 9 Electronics42 Science | Pending | 2021 |
| HIVERTECH 0904093 | an individual | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1990 |
| HYBRID 2263219 · TMA1276549 | COCHLEAR LIMITED | 10 Medical | Registered | 2024 |
| HUB4PARTNERS 2256840 · TMA1276290 | ADNM AMERICA INC. | 35 Advertising42 Science | Registered | 2024 |
| HYPERDRIVE 2226941 · TMA1245611 | Turntide Technologies Inc. | 9 Electronics | Registered | 2024 |
| HYBRIT 2202112 · TMA1282807 | an individual | 6 Metal | Registered | 2025 |
| HYBRIDLIGHT 2144489 · TMA1206220 | Hybrid Light, LLC | 11 Lighting | Registered | 2023 |
| HPRT 2135218 · TMA1224383 · design | Xiamen Hanin Electronic Technology Co.,Ltd. | 9 Electronics | Registered | 2024 |
| Hypertube 2109760 · TMA1244945 | Owner not shown | 12 Vehicles39 Transport42 Science | Registered | 2024 |
| HPRT 2106837 · TMA1171479 · design | Xiamen Hanin Electronic Technology Co.,Ltd. | 2 Paints7 Machines16 Paper | Registered | 2023 |
| hyperTunnel 2071466 · TMA1160377 | hyperTunnel IP Limited | 37 Construction42 Science | Registered | 2023 |