| ISOLOFT 1701233 · TMA931062 | MIDWAY INDUSTRIES LTD./ INDUSTRIES MIDWAY LTÉE | 25 Clothing | Registered | 2016 |
| IGLOOFEST 1415598 · TMA753846 | 9197-3396 QUÉBEC INC. | 41 Education | Registered | 2009 |
| iGolife 2246246 · TMA1264495 | Owner not listed | 16 Paper | Registered | 2024 |
| iSleep 2122490 · TMA1192862 | VERGER DU SUREAU INC. | 5 Pharmaceuticals | Registered | 2023 |
| IZULAVEM 2093783 · TMA1263875 | Merck Sharp & Dohme LLC | 5 Pharmaceuticals | Registered | 2024 |
| 6ixlips 2062803 · TMA1155337 | HBE Medical Spa Inc. | 44 Medical | Registered | 2022 |
| ISOLOVEPLAY 2028492 · TMA1266500 | Amped2Play Inc. | 41 Education | Registered | 2024 |
| iSLEEVE 1779007 · TMA1051388 | Boston Scientific Scimed, Inc. | 10 Medical | Registered | 2019 |
| ISLABIKES 1717813 · TMA998440 | Islabikes Limited | 12 Vehicles25 Clothing35 Advertising | Registered | 2018 |
| ISELFCHANGE 1686312 · TMA924336 | Nova Southeastern University a Florida corporation | 9 Electronics | Registered | 2015 |
| iCOlube 1681458 · TMA929550 | LUKOIL Marine Lubricants Germany GmbH | 7 Machines | Registered | 2016 |
| iCLUB 1665549 · TMA1035099 | Norstar Corporation | 6 Metal9 Electronics14 Jewellery+11 | Registered | 2019 |
| ICLUBS 1617300 · TMA889054 | Athletic Business Media, Inc. | 9 Electronics16 Paper41 Education | Registered | 2014 |
| ICLUB 1593749 · TMA965436 | THE BANK OF NOVA SCOTIA | 36 Finance | Registered | 2017 |
| ISCSILVER 1555950 · TMA883523 | SPC RESOURCES, INC. | 42 Science | Registered | 2014 |
| iQliving 1527516 · TMA824246 | an individual | 35 Advertising | Registered | 2012 |
| ICELIVE 1398038 · TMA785515 | Intercontinental Exchange Holdings, Inc. | 36 Finance38 Telecommunications | Registered | 2010 |
| ISLEEP 1030606 · TMA575616 | iSleep, Inc. (a Nebraska corporation) | 20 Furniture | Registered | 2003 |
| ISOLOFOAM 0560377 · TMA341036 | GROUPE ISOLOFOAM INC./ISOLOFOAM GROUP INC. | 19 Building | Registered | 1988 |
| ICLEVER 2351130 · design | Owner not listed | 9 Electronics25 Clothing | Pending | 2024 |
| isoliv 2344517 | Owner not listed | 35 Advertising | Pending | 2024 |
| ICLIP 2322135 · design | an individual | 9 Electronics | Pending | 2024 |
| ISLEAF 2301850 · design | NEWLAND.HO INTERNATIONAL CO.LTD. | 3 Cosmetics | Pending | 2023 |
| IZELVAY 2276834 · design | Owner not listed | 5 Pharmaceuticals | Pending | 2023 |
| IZELVAY 2272965 | Owner not listed | 5 Pharmaceuticals | Pending | 2023 |