ZS Pharma, Inc.

20 patents currently held · Updated Nov 15, 2026

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

Ending by 2030

Feb 2032

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

1 fee due Jan 2, 2027
The maintenance fee for Microporous zirconium silicate for the treatment of hyperkalemia (US 10,335,432) comes due Jan 2, 2027. Unpaid by Jul 2, 2027, it lapses early.
1 fee due Feb 28, 2027
The maintenance fee for Extended Use Zirconium Silicate Compositions and Methods of Use Thereof (US 11,738,044) comes due Feb 28, 2027. Unpaid by Aug 30, 2027, it lapses early.
2 fees due Mar 3 to 17, 2027 · next Mar 3

Which patents, and when each one lapses · Pro

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 10,398,730	Microporous zirconium silicate for the treatment of hyperkalemia In force Ends no later than Feb 10, 2032 · From the USPTO record	In force	Ends no later than Feb 10, 2032	From the USPTO record
US 11,406,662	Microporous zirconium silicate for the treatment of hyperkalemia In force Ends no later than Feb 10, 2032 · From the USPTO record	In force	Ends no later than Feb 10, 2032	From the USPTO record
US 10,335,432	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Feb 16, 2032 · From the USPTO record	In force	Term ends Feb 16, 2032	From the USPTO record
US 9,861,658	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Apr 17, 2032 · From the USPTO record	In force	Term ends Apr 17, 2032	From the USPTO record
US 8,802,152	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Apr 19, 2032 · From the USPTO record	In force	Term ends Apr 19, 2032	From the USPTO record
US 8,808,750	Microporous zirconium silicate for the treatment of hyperkalemia In force Ends no later than May 18, 2032 · From the USPTO record	In force	Ends no later than May 18, 2032	From the USPTO record
US 9,662,352	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Jul 27, 2032 · From the USPTO record	In force	Term ends Jul 27, 2032	From the USPTO record
US 9,457,050	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Sep 16, 2032 · From the USPTO record	In force	Term ends Sep 16, 2032	From the USPTO record
US 9,844,567	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Feb 23, 2033 · From the USPTO record	In force	Term ends Feb 23, 2033	From the USPTO record
US 8,877,255	Microporous zirconium silicate for the treatment of hyperkalemia In force Term ends Oct 22, 2033 · From the USPTO record	In force	Term ends Oct 22, 2033	From the USPTO record

10 of 20 patents shown.

Pro members see all 20.

Pro members: see all 20 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

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

2 abandoned · 13 no status recorded

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