| Perkins Coie LLP | Menlo Park, California, United States |
| Perlegen Sciences Inc. | Mountain View, California, United States |
| Petra Solar | South Plainfield, New Jersey, United States |
| Petrogas Environmental Systems | Angleton, Texas, United States |
| Pfeiffer Vacuum Inc. | Nashua, New Hampshire, United States |
| Pfizer Pharmaceuticals Group | Ann Arbor, Michigan, United States |
| Phage Biocontrol, LLC | Bryan, Texas, United States |
| Pharmaceutical Containment Technologies, LLC | Wilmington, Delaware, United States |
| PharmaSeq Inc. | Monmouth Junction, New Jersey, United States |
| Phaze-9 Corp. | Sunnyvale, California, United States |