technetium tc-99m labeled carbon · Cyclomedica · NDA 022335
Technegas Kit
Earliest generic entry, as listed
24 Feb 2031
Blocked by patent: US 7722856. Only method-of-use patents remain, so a generic may carve out the protected indication and enter earlier.
Listed patents · 1 unexpired
| Patent | Claims | Expires |
|---|---|---|
| US 7722856 | use U-4442 · sets the listed date | 24 Feb 2031 |
Exclusivities · 0 unexpired
No unexpired exclusivities listed.
Paragraph IV certifications · 0
No Paragraph IV certification listed by FDA for this drug.
The list shows that a generic applicant certified to FDA that a listed patent is invalid or not infringed. It does not show litigation, settlements or launch timing.
Event history
No events yet. The first ingestion only records products entering their 12-month window; changes appear from the next Orange Book update.
Products covered · 1
| NDA · product | Form | Strength | Listed expiry |
|---|---|---|---|
| 022335 · 001 · RLD | aerosol, inhalation | N/A | 24 Feb 2031 |
Expired or delisted (1)
- NP · 29 Sep 2026