| SUITCASE 1465739 · TMA843188 | Steam Whistle Brewing Inc. | 32 Beer35 Advertising41 Education | Registered | 2013 |
| STAYCAST 1860577 · TMA1122887 | SONIFI Solutions, Inc. | 9 Electronics38 Telecommunications42 Science | Registered | 2022 |
| SiteCast 0828343 · TMA497291 | SiteCast Construction Corp. | 35 Advertising37 Construction45 Legal | Registered | 1998 |
| STYCAST 1620682 · TMA899728 | Henkel AG & Co. KGaA | 1 Chemicals | Registered | 2015 |
| Satkago 2078291 | an individual | 28 Toys | Pending | 2021 |
| SHOUTCAST 1335053 · TMA761235 | an individual | 9 Electronics38 Telecommunications | Registered | 2010 |
| SWEETCAKE 1119745 · TMA616820 | Westway Trading Corporation a Delaware corporation | 5 Pharmaceuticals | Registered | 2004 |
| SIDSYS 2233722 · TMA1254141 | SID SYSTEMS CO.LTD | 11 Lighting | Registered | 2024 |
| STICKAGRAPH 2201098 · TMA1242605 | an individual | 16 Paper | Registered | 2024 |
| SquadChess 2190121 · TMA1234645 | an individual | 9 Electronics28 Toys | Registered | 2024 |
| SEEDESIGN 2159723 · TMA1197118 | Inari Agriculture, Inc.Inari Agriculture Technology, Inc. | 42 Science | Registered | 2023 |
| Stycizom 2159240 · TMA1211044 | Shenzhen Baoyu Technology Co. Ltd. | 25 Clothing28 Toys | Registered | 2023 |
| SETKIQ 2156115 · TMA1191128 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2023 |
| STASHIOS 2131017 · TMA1176681 | SILVER FOX, LLC | 31 Fresh | Registered | 2023 |
| STACKHAWK 2126799 · TMA1170351 | StackHawk, Inc. | 42 Science | Registered | 2023 |
| STACYC 2091061 · TMA1149377 | StaCyc, Inc. | 12 Vehicles | Registered | 2022 |
| STAKYCET 2081092 · TMA1181515 | an individual | 9 Electronics | Registered | 2023 |
| STEGOSELECT 2051875 · TMA1126406 | Stego Industries, LLC | 17 Rubber | Registered | 2022 |
| STIKAGE 2046073 · TMA1145855 | an individual | 18 Leather25 Clothing | Registered | 2022 |
| STOCKWICK 2032572 · TMA1269456 · design | an individual | 36 Finance45 Legal | Registered | 2024 |
| 4SDESIGNS 2032275 · TMA1145712 · design | an individual | 18 Leather25 Clothing | Registered | 2022 |
| 4SDESIGNS 2030783 · TMA1145703 | an individual | 18 Leather25 Clothing | Registered | 2022 |
| SIDEKICK 2011525 · TMA1195155 | THE YANKEE CANDLE COMPANY, INC. | 3 Cosmetics21 Housewares | Registered | 2023 |
| STOKES 1986342 · TMA1204601 | Shivbro Investments Inc. | 8 Hand21 Housewares35 Advertising | Registered | 2023 |
| SWEETKICK 1978484 · TMA1188030 | Nu Brands, Inc. | 5 Pharmaceuticals | Registered | 2023 |