| SCALEBUSTER 1265549 · TMA781492 | Ion Enterprises Limited | 9 Electronics11 Lighting37 Construction | Registered | 2010 |
| SLEEPSTER 1663658 · TMA901343 | Munchkin, Inc. | 25 Clothing | Registered | 2015 |
| SOLOFUSE 1503379 · TMA865274 | Wyeth LLC a Delaware limited liability company | 5 Pharmaceuticals | Registered | 2013 |
| SILVASTAR 1102003 · TMA611449 | SILVASTAR USA CORP. | 19 Building | Registered | 2004 |
| SYLVESTER 0661678 · TMA437489 · design | Warner Bros. Entertainment Inc. (a Delaware Corporation) | 9 Electronics41 Education | Registered | 1994 |
| SYLVESTER 0425822 · TMA307065 | Warner Bros. Entertainment Inc. (a Delaware Corporation) | 2 Paints9 Electronics16 Paper+3 | Registered | 1985 |
| SILOBOSS 2351991 | Owner not listed | 7 Machines11 Lighting | Pending | 2024 |
| SYLPAXXO 2274275 · TMA1285052 | an individual | 5 Pharmaceuticals | Registered | 2025 |
| SOLPEX 2234071 · TMA1254155 · design | SOLPEX Inc. | 37 Construction | Registered | 2024 |
| SLEEPSYNC 2228371 · TMA1247120 | Inspire Medical Systems, Inc. | 42 Science | Registered | 2024 |
| sheilabox 2219363 · TMA1248392 | Humai Household Products (Shenzhen) Co., Ltd. | 14 Jewellery | Registered | 2024 |
| SOLVESEAL 2209035 · TMA1241676 | Alberta Veterinary Laboratories Ltd. | 5 Pharmaceuticals | Registered | 2024 |
| SLVBAKK 2207812 · TMA1282847 · design | Slvbakk Technology Limited | 9 Electronics | Registered | 2025 |
| SLVBACK 2207811 · TMA1282846 · design | Slvbakk Technology Limited | 9 Electronics | Registered | 2025 |
| SELFIESHOW 2203926 · TMA1240000 | Shenzhen Liangdianpai Technology Co., Ltd. | 9 Electronics | Registered | 2024 |
| Shelfgram 2203672 · TMA1271849 | FASG Inc. | 9 Electronics | Registered | 2024 |
| SLEEPYS 2195734 · TMA1284513 | Mattress Firm, Inc. a Delaware Corporation | 18 Leather20 Furniture24 Textiles+1 | Registered | 2025 |
| SELFKIFFE 2178415 · TMA1227323 · design | an individual | 3 Cosmetics | Registered | 2024 |
| SOLEBASIC 2169448 · TMA1220614 | TOP GLORY TRADING GROUP INC | 25 Clothing | Registered | 2024 |
| SLEEPOS 2161606 · TMA1212264 | Eight Sleep Inc. | 9 Electronics | Registered | 2023 |
| Skullboyz 2135979 · TMA1198915 | 1844365 ALBERTA LTD. | 9 Electronics25 Clothing35 Advertising | Registered | 2023 |
| SOLVISO 2135145 · TMA1197916 | JW Froehlich Maschinenfabrik GmbH | 9 Electronics | Registered | 2023 |
| Slipstick 2133622 · TMA1166149 | CBD Consolidated LLC | 20 Furniture | Registered | 2023 |
| SLEEPYS 2131538 · TMA1284283 · design | Mattress Firm, Inc. a Delaware Corporation | 20 Furniture | Registered | 2025 |
| Skillbox 2130743 · TMA1243815 | Limited liability company "Skillbox" | 9 Electronics35 Advertising38 Telecommunications+2 | Registered | 2024 |