MDF Instruments USA LLC

11 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

Aug 2028

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

No maintenance fee falls due on this company's record before Nov 14, 2027.

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Patent	Title	Status	Expires	Confidence
US D711,533	Reflex hammer In force Term ends Aug 19, 2028 · From the USPTO record	In force	Term ends Aug 19, 2028	From the USPTO record
US D724,206	Combination tube and headset of a stethoscope In force Term ends Mar 10, 2029 · From the USPTO record	In force	Term ends Mar 10, 2029	From the USPTO record
US D724,728	Clip for stethoscope chestpiece attachments In force Term ends Mar 17, 2029 · From the USPTO record	In force	Term ends Mar 17, 2029	From the USPTO record
US 8,939,251	Stethoscope with light source and/or timepiece In force Term ends Jun 27, 2033 · From the USPTO record	In force	Term ends Jun 27, 2033	From the USPTO record
US 9,486,180	Chestpiece of a stethoscope In force Term ends Jun 27, 2033 · From the USPTO record	In force	Term ends Jun 27, 2033	From the USPTO record
US D926,313	Stethoscope tubing In force Term ends Jul 27, 2036 · From the USPTO record	In force	Term ends Jul 27, 2036	From the USPTO record
US D1,069,111	Stethoscope tubing In force Term ends Apr 1, 2040 · From the USPTO record	In force	Term ends Apr 1, 2040	From the USPTO record
US D1,069,112	Stethoscope tubing In force Term ends Apr 1, 2040 · From the USPTO record	In force	Term ends Apr 1, 2040	From the USPTO record
US 11,666,302	One-Piece Diaphragm And Ring For Stethoscope Chestpiece In force Term ends Jun 23, 2041 · High confidence	In force	Term ends Jun 23, 2041	High confidence
US 12,011,313	Stethoscope and binaural assembly for a stethoscope including a sound junction blockage prevention member In force Term ends Oct 14, 2042 · From the USPTO record	In force	Term ends Oct 14, 2042	From the USPTO record

10 of 11 patents shown.

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Pro members: see all 11 patents

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

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Published applications

Every application published under this name has become a patent.