| SIGMA 2041429 · TMA1122499 | an individual | 7 Machines | Registered | 2022 |
| SIGMA 2001859 · TMA1202277 | Hitachi-Johnson Controls Air Conditioning, Inc. | 11 Lighting | Registered | 2023 |
| SIGMA 1880186 · TMA1058602 · design | an individual | 7 Machines | Registered | 2019 |
| SIGMA 1850774 · TMA1110714 | CARL ZEISS MICROSCOPY GMBH | 9 Electronics | Registered | 2021 |
| SIGMA 1847334 · TMA1087179 · design | Hansen Technologies Canada, Inc. | 9 Electronics42 Science | Registered | 2020 |
| SIGMA 1847330 · TMA1087177 | Hansen Technologies Canada, Inc. | 9 Electronics42 Science | Registered | 2020 |
| SIGMA 1769314 · TMA1012782 · design | Sigma Enterprises, LLC | 3 Cosmetics8 Hand20 Furniture+2 | Registered | 2019 |
| SIGMA 1668696 · TMA1008979 · design | an individual | 7 Machines9 Electronics | Registered | 2018 |
| Sigma 1668659 · TMA975672 | an individual | 7 Machines9 Electronics11 Lighting+3 | Registered | 2017 |
| SIGMA 1569847 · TMA874101 | West Fraser Developments Ltd. | 43 Restaurants | Registered | 2014 |
| SIGMA 1535473 · TMA831728 | Summit Inspection Services Ltd. | 9 Electronics42 Science | Registered | 2012 |
| SIGMA 1531013 · TMA861537 | Swiss Reinsurance Company Ltd | 9 Electronics16 Paper | Registered | 2013 |
| SIGMA 1502477 · TMA852253 | Mounting Systems GmbH | 6 Metal9 Electronics37 Construction+1 | Registered | 2013 |
| SIGMA 1376822 · TMA728235 | Sigma Plastic Services, Inc. | 9 Electronics40 Treatment42 Science | Registered | 2008 |
| SIGMA 1338012 · TMA719885 | DePuy Synthes, Inc. | 10 Medical | Registered | 2008 |
| SIGMA 1280531 · TMA678741 | Owner not shown | 7 Machines8 Hand | Registered | 2006 |
| SIGMA 1245447 · TMA690597 | an individual | 1 Chemicals9 Electronics11 Lighting+5 | Registered | 2007 |
| SIGMA 1080577 · TMA625786 | SIGMA CORPORATION | 9 Electronics35 Advertising36 Finance+1 | Registered | 2004 |
| SIGMA 1060462 · TMA562037 | ÉQUIPEMENTS SIGMA INC. | 35 Advertising37 Construction | Registered | 2002 |
| SIGMA 0879008 · TMA582165 | AMERICAN FAUCET AND COATINGS CORPORATION | 11 Lighting21 Housewares | Registered | 2003 |
| SIGMA 0848620 · TMA492748 | Shakespeare All Star Acquisition LLC | 28 Toys | Registered | 1998 |
| SIGMA 0706608 · TMA443564 · design | SIGMA-RH SOLUTIONS INC. | 9 Electronics | Registered | 1995 |
| SIGMA 0654894 · TMA382758 | TBC Trademarks, LLC (a Delaware limited liability company) | 12 Vehicles | Registered | 1991 |
| SIGMA 0416520 · TMA257310 | SIGMA CORPORATION | 9 Electronics | Registered | 1981 |
| SIGMA 0253927 · TMA120140 | an individual | 1 Chemicals | Registered | 1960 |