| SCIENTEK 1238680 · TMA686808 | SCIENTEK TECHNOLOGY CORPORATION | 7 Machines9 Electronics10 Medical+1 | Registered | 2007 |
| SCINTIX 2250312 · TMA1267442 | Reflexion Medical, Inc. | 9 Electronics10 Medical44 Medical | Registered | 2024 |
| SCIENTUS 1858242 · TMA1021511 · design | Scientus Pharma Inc. | 5 Pharmaceuticals34 Tobacco35 Advertising+5 | Registered | 2019 |
| SCIENTUS 1830425 · TMA1021509 | Scientus Pharma Inc. | 5 Pharmaceuticals35 Advertising36 Finance+4 | Registered | 2019 |
| SCENTECH 1664423 · TMA997445 | an individual | 24 Textiles25 Clothing | Registered | 2018 |
| SKINTEX 1658313 · TMA1010690 | Fashion Chemicals GmbH & Co. KG | 9 Electronics18 Leather21 Housewares+2 | Registered | 2018 |
| SKINTEX 1144478 · TMA672047 | Fashion Chemicals GmbH & Co. KG | 1 Chemicals | Registered | 2006 |
| SCENTOS 2176463 · TMA1282629 · design | Weveel LLC | 16 Paper | Registered | 2025 |
| sContact 1983274 · TMA1134688 | CONTINENTAL REIFEN DEUTSCHLAND GMBH | 12 Vehicles | Registered | 2022 |
| SUNTECT 1894483 · TMA1184570 | OLIVARIUS HOSPITALITY CALIFORNIA, LLC | 18 Leather24 Textiles25 Clothing | Registered | 2023 |
| SENTEQ 1873757 · TMA1077132 · design | SENTEQ CO. LTD. a legal entity | 9 Electronics10 Medical28 Toys | Registered | 2020 |
| SIMTEX 1832263 · TMA1004937 | UBE EXSYMO CO. LTD. | 22 Ropes | Registered | 2018 |
| SEMTEX 1820717 · TMA1070791 | Nutrabolics Inc. | 5 Pharmaceuticals | Registered | 2020 |
| SCENTS 1668730 · TMA912637 · design | Shurtape Technologies, LLC | 17 Rubber | Registered | 2015 |
| SCENTS 1668729 · TMA912639 | Shurtape Technologies, LLC | 17 Rubber | Registered | 2015 |
| SKINTACT 1605345 · TMA884653 | Leonhard Lang GmbH | 5 Pharmaceuticals10 Medical | Registered | 2014 |
| SCENTSY 1504894 · TMA823683 | Scentsy, Inc. | 4 Oils5 Pharmaceuticals11 Lighting+1 | Registered | 2012 |
| SHANTEX 1488027 · TMA816355 · design | SHANTEX BUILDING PRODUCTS INC. | 19 Building | Registered | 2012 |
| SCENTZRO 1444098 · TMA767098 | COTE-RECO INC. | 16 Paper17 Rubber24 Textiles | Registered | 2010 |
| SCANTEAK 1398865 · TMA775884 · design | HAWAII FURNISHING PTE LTD. | 20 Furniture35 Advertising | Registered | 2010 |
| SUNTEX 1392958 · TMA749582 | Suntek Industries, Ltd. | 3 Cosmetics | Registered | 2009 |
| SWINTEC 0601319 · TMA361233 | SWINTEC CORPORATION | 9 Electronics16 Paper | Registered | 1989 |
| SWINTEC 0580836 · TMA342564 | SWINTEC CORPORATION | 9 Electronics16 Paper | Registered | 1988 |
| SINTOX 0556700 · TMA320999 · design | RWS GmbH | 13 Firearms | Registered | 1986 |
| SINTOX 0479071 · TMA273708 | RWS GmbH | 13 Firearms | Registered | 1982 |