Maintenance fees coming due
3 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Mar 29, 2027. Unpaid by Sep 29, 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 9,146,242 | Levels of Blys/April Heterotrimers in Serum and Use in Diagnostic Methods In force Fee due Mar 29, 2027 Lapses if unpaid Sep 29, 2027 · High confidence | ZymoGenetics, Inc. | In force | Mar 29, 2027 | Sep 29, 2027 | High confidence | |
| US 10,570,187 | Soluble Hybrid Fcgamma Receptors and Related Methods In force Fee due Aug 25, 2027 Lapses if unpaid Feb 25, 2028 · High confidence | ZymoGenetics, Inc. | In force | Aug 25, 2027 | Feb 25, 2028 | High confidence | |
| US 10,640,559 | Nucleic Acid Molecules Encoding Humanized IL-31 Monoclonal Antibodies In force Fee due Nov 5, 2027 Lapses if unpaid May 5, 2028 · High confidence | Merck Serono S/A | In force | Nov 5, 2027 | May 5, 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.