US Patent

US11813291 — Ready-to-use potassium phosphates in sodium chloride solutions

Method of Use · Assigned to Nivagen Pharmaceuticals Inc · Expires 2041-10-12 · 15y remaining

Vulnerability score 75/100 Vulnerable — likely target for IPR or design-around

What this patent protects

This patent protects a ready-to-use potassium phosphates solution in sodium chloride for phosphorus replacement therapy with specific phosphorus and potassium concentrations.

USPTO Abstract

A ready-to-use (RTU) potassium phosphates in sodium chloride solution for phosphorus replacement therapy includes potassium phosphate and sodium chloride at a fixed volume with 15 mmol/100 mL phosphorus and 22 mEq/100 mL potassium and less than 50 mcg/L aluminum.

Drugs covered by this patent

Clinimix E 2.75/5 Sulfite Free W/ Elect In Dextrose 5% W/ Calcium In Plastic Container (POTASSIUM PHOSPHATE, DIBASIC) · Pfizer

FDA Patent Use Codes

When a patent is method-of-use, FDA lists it once per applicable indication ("U-code"). Each U-code carves out a specific therapeutic use that generic filers must either license or design around.

Code	Description	Drug
`U-4185`	—	Clinimix E 2.75/5 Sulfite Free W/ Elect In Dextrose 5% W/ Calcium In Plastic Container
`U-4185`	—	Clinimix E 2.75/5 Sulfite Free W/ Elect In Dextrose 5% W/ Calcium In Plastic Container

Patent Metadata

Patent number: US11813291
Jurisdiction: US
Classification: Method of Use
Expires: 2041-10-12
Drug substance claim: No
Drug product claim: Yes
Assignee: Nivagen Pharmaceuticals Inc
Source: FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

Track this patent

Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.