| 98761554 | OCC | Oakmont Country Club | — |
| 87923332 | OCC | Oakland Community College | 5637991 |
| 88214969 | OCC | LSC ENVIRONMENTAL PRODUCTS, LLC | 5793694 |
| 78303980 | OCC | American Optometric Association | 2886645 |
| 87488638 | OCC | Coast Community College District | 5511191 |
| 88036959 | OCC | INTERNATIONAL TRUCK INTELLECTUAL PROPERTY COMPANY, LLC | 6872956 |
| 75913595 | OCC | One Call Concepts, Inc. | 2557846 |
| 73737016 | OCC | OMNI COMMERCIAL, LLC | 1527353 |
| 77544703 | OCC | SUSTAINABLE HARVEST, INC. | 3870954 |
| 88834236 | OCC | The Options Clearing Corporation | 6331777 |
| 88834182 | OCC | The Options Clearing Corporation | 6331776 |
| 77796204 | OCC | Optical Cable Corporation | 3858971 |
| 76569337 | OCC | Orange County Chapper Design PropertiesL | 3268745 |
| 76571434 | OCC | ORANGE COUNTY CHOPPERS DESIGN PROPERTIES | 3216123 |
| 73508656 | OCC | OAKMONT COUNTRY CLUB | 1355873 |
| 78376984 | OCC | Owens State Community College | 3325638 |
| 76626058 | OCC | Walzen Irle GmbH | 3092027 |
| 86101440 | OCC | Orange County Choppers Design Properties, LLC | — |
| 78897211 | OCC | Obsessive Compulsive Cosmetics, Inc. | 3220158 |
| 85415732 | OCC | Richard, Corey | — |
| 85428497 | OCC | One-Cycle Control, Inc | — |
| 85373399 | OCC | Harmonic Technology LLC. | — |
| 76430286 | OCC | ORANGE COUNTY CHOPPERS DESIGN PROPERTIES, LLC | 2843644 |
| 78388324 | OCC | Pacel-Sellers, Dave | — |
| 76198574 | OCC | KeyMed (Medical & Industrial Equipment) Limited | 2510098 |
| 77109666 | OCC | Neng Feng WANG | — |
| 75876970 | OCC | Board of Trustees of Community College District No. 535, County of Cook and State of Illinois, a body politic and corporate | 2398121 |
| 78558901 | OCC | Abbott Laboratories | — |
| 76639187 | OCC | Rogers, Kiamesha | — |
| 73509948 | OCC | OPTICAL COMMUNICATIONS CORPORATION | 1353804 |
| 73438529 | OCC | Ohlmeyer Communications Company | 1315067 |
| 76429416 | OCC | OWENS STATE COMMUNITY COLLEGE | — |
| 76387463 | OCC | Orion Cartridge Company, LLC | — |
| 74441442 | OCC | Ablon, John | 1914065 |
| 75327150 | OCC | KeyMed (Medical & Industrial Equipment) Limited | — |
| 73734708 | OCC | OJO CALIENTE CRAFTSMAN, INC. | 1526514 |
| 71079370 | OCC | OPPENHEIMER CASING CO. | 0101196 |
| 74069602 | OCC | OLYMPUS AMERICA INC. | — |
| 74040469 | OCC | Oestreicher Construction Corporation | — |
| 71596435 | OCC | PARK-OHIO INDUSTRIES, INC. | 0536293 |
| 73266020 | OCC | Offshore Construction Consultants Inc. | 1176528 |