Immunogen INC
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersWaltham, MA
US patents256
SAM.gov UEIGPE8PCA3MKZ3
CAGE code61CM8
Incorporated inMA
LEI54930084U0R1OP766Y02
Supplier designations
For Profit Organization
Self-certified by the company in its SAM.gov registration
Patents
256 US patents granted 1993–2025, 50 of them in the five years to SEP 2025.
Pharmaceuticals 195Organic fine chemistry 29Measurement 13Biotechnology 8Audio-visual technology 6
- Maytansinoid derivatives with self-immolative peptide linkers and conjugates thereofUS 12,390,471 · granted AUG 19, 2025
- Methods of preparing cytotoxic benzodiazepine derivativesUS 11,981,688 · granted MAY 14, 2024
- Methods of preparing cytotoxic benzodiazepine derivativesUS 11,981,687 · granted MAY 14, 2024
- Cytotoxic benzodiazepine derivativesUS RE49918 · granted APR 16, 2024
- Compositions and methods for antibody productionUS 11,945,862 · granted APR 2, 2024
Newest 5 shown · Granted to Immunogen, INC. · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Immunogen INC | Waltham | MA | — | LIKELY ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.