| SRECON 1762584 · TMA1013327 | USENIX ASSOCIATION, a legal entity | 41 Education | Registered | 2019 |
| SARCON 2225980 · TMA1222551 · design | FUJI POLYMER INDUSTRIES CO. LTD. | 17 Rubber | Registered | 2024 |
| SARCON 2118474 · TMA1222090 | FUJI POLYMER INDUSTRIES CO. LTD. | 17 Rubber | Registered | 2024 |
| SHERCON 1615566 · TMA894877 | Protective Industries, Inc. | 6 Metal17 Rubber40 Treatment | Registered | 2015 |
| SEREGON 1373869 · TMA813476 | Seregon Solutions Inc. | 9 Electronics16 Paper42 Science | Registered | 2011 |
| SURESCAN 1244869 · TMA810998 | MEDTRONIC, INC. a Minnesota corporation | 10 Medical | Registered | 2011 |
| SURESCAN 1113205 · TMA620241 | Agilent Technologies, Inc. | 9 Electronics | Registered | 2004 |
| SURESCAN 0826997 · TMA519454 | an individual | 9 Electronics | Registered | 1999 |
| SERACON 2345455 | Les Produits Seracon Inc. | 4 Oils11 Lighting20 Furniture+3 | Pending | 2024 |
| SHARECONN 2116900 · TMA1211900 · design | Changsha Ztotop Technology Co. Ltd. | 28 Toys | Registered | 2023 |
| SHARESCAN 1167107 · TMA606488 | eCopy, Inc. (a New Hampshire Corporation) | 9 Electronics | Registered | 2004 |
| SHAREECAN 2299691 | AK Motor International Corporation | 9 Electronics37 Construction40 Treatment | Pending | 2023 |
| SERAGON 2067121 · TMA1159225 | Seragon Pharmaceuticals Inc | 5 Pharmaceuticals42 Science | Registered | 2023 |
| SRIXON 1674931 · TMA967606 · design | Sumitomo Rubber Industries, Ltd. | 18 Leather24 Textiles25 Clothing+1 | Registered | 2017 |
| SURE2CONNECT 1568011 · TMA882685 | BrassCraft Manufacturing Company | 11 Lighting | Registered | 2014 |
| SARCAN 1551581 · TMA853754 | Saskatchewan Association of Rehabilitation Centres | 35 Advertising37 Construction40 Treatment+2 | Registered | 2013 |
| SUREGAIN 1512652 · TMA841750 | an individual | 36 Finance | Registered | 2013 |
| SIRAGON 1453230 · TMA874870 | an individual | 9 Electronics | Registered | 2014 |
| SIRAGON 1453229 · TMA874867 · design | an individual | 9 Electronics | Registered | 2014 |
| SURESKIN 1368955 · TMA751685 | Euromed, Inc. | 10 Medical | Registered | 2009 |
| SEREGEN 1356759 · TMA730234 | RHEEM MANUFACTURING COMPANY | 7 Machines | Registered | 2008 |
| SARGON 0991694 · NFLD1694 | THE SARGON LABORATORIES INC. (AN OHIO CORPORATION) | 5 Pharmaceuticals | Registered | 1929 |
| SARACEN 0991366 · NFLD1366 | J & C. BOYD & CO. LTD. | 9 Electronics24 Textiles | Registered | 1925 |
| SARACEN 0990605 · NFLD605 | J & C. BOYD & CO. LTD. | 25 Clothing | Registered | 1917 |
| SRIXON 0743334 · TMA516454 | Sumitomo Rubber Industries, Ltd. | 28 Toys | Registered | 1999 |