Maintenance fees coming due

Drum Workshop, Inc.

4 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Jan 21, 2027. Unpaid by Jul 21, 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 9,087,497	Adjustable Cajón Instrument Drum Workshop, Inc. In force Fee due Jan 21, 2027 Lapses if unpaid Jul 21, 2027 Term ends Sep 11, 2033 · High confidence	Drum Workshop, Inc.	In force	Jan 21, 2027	Jul 21, 2027	Term ends Sep 11, 2033	High confidence
US 9,240,169	Pivot Supports for Drum Rim Drum Workshop, Inc. In force Fee due Jul 19, 2027 Lapses if unpaid Jan 19, 2028 Term ends May 6, 2031 · High confidence	Drum Workshop, Inc.	In force	Jul 19, 2027	Jan 19, 2028	Term ends May 6, 2031	High confidence
US 9,257,109	Eyebolt Bracket Assembly Drum Workshop, Inc. In force Fee due Aug 9, 2027 Lapses if unpaid Feb 9, 2028 Term ends Oct 24, 2034 · High confidence	Drum Workshop, Inc.	In force	Aug 9, 2027	Feb 9, 2028	Term ends Oct 24, 2034	High confidence
US 11,922,907	Electronic Cymbal Instruments and Systems Drum Workshop, Inc. In force Fee due Sep 5, 2027 Lapses if unpaid Mar 6, 2028 Term ends Nov 19, 2041 · High confidence	Drum Workshop, Inc.	In force	Sep 5, 2027	Mar 6, 2028	Term ends Nov 19, 2041	High confidence

4 of 4 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.