Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Dec 25, 2026. Unpaid by Jun 25, 2027, that one lapses early.
A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5
and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the
six month grace period that follows.
| Patent | Title | Holder | Status | Fee due | Lapses if unpaid | Expires | Confidence |
|---|---|---|---|---|---|---|---|
| US 10,328,250 | Medical Device Adapter In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 · High confidence | Covellus LLC | In force | Dec 25, 2026 | Jun 25, 2027 | High confidence | |
| US 11,793,988 | Modular Medical Device Catheter System In force Fee due Apr 24, 2027 Lapses if unpaid Oct 25, 2027 · High confidence | Covellus LLC | In force | Apr 24, 2027 | Oct 25, 2027 | High confidence | |
| US 11,857,736 | Modular Medical Device Catheter System In force Fee due Jul 2, 2027 Lapses if unpaid Jan 3, 2028 · High confidence | Covellus LLC | In force | Jul 2, 2027 | Jan 3, 2028 | High confidence |
3 of 3 patents shown. Soonest fee due date first, then patent number.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.