Wednesday, July 8, 2026

Patent intelligence · US

US 8541231

Elimination of N-glycolylneuraminic acid from animal products for human use

granted A61KA61K8/983
Status granted
Linked drugs 3
Pipeline programs 6
Years to expiry 7
Applicant portfolio 8,292
Patent details — US 8541231

Quick answer

US 8541231 (Elimination of N-glycolylneuraminic acid from animal products for human use) is held by The Regents of the University of California. Status: granted. Granted Sep 24, 2013. Expires Sep 19, 2033 (7 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
2
CPC classes
A61K, A61K8/983

More from The Regents of the University of California

Related pharmaceutical patents in our USPTO index.

  1. US 12428463

    Chimeric antigen receptors targeting abnormal glycobiology

    THE REGENTS OF THE UNIVERSITY OF MICHIGAN · Expires Sep 25, 2045

    granted
  2. US 12427148

    Cancer treatment targeted to tumor adaptive responses to protein synthesis stress

    The Regents of the University of California · Expires Sep 25, 2045

    granted
  3. US 12428416

    ERK inhibitors and uses thereof

    The Regents of the University of California · Expires Sep 25, 2045

    granted
  4. US 12427151

    Compositions and method of treating cancer

    The Regents of the University of California · Expires Sep 25, 2045

    granted
  5. US 12427197

    Methods of producing cobalt nanoparticles and hollow metal nanospheres

    The Regents of the University of California · Expires Sep 25, 2045

    granted
  6. US 12428489

    Human PD-L2 antibodies and methods of use therefor

    The Board of Regents of the University of Texas System · Expires Sep 25, 2045

    granted
  7. US 12427155

    Treatment for tau-related diseases

    The Regents of the University of California · Expires Sep 25, 2045

    granted
  8. US 12428455

    Dominant negative CEBPB and CEBPD proteins and methods of use for decreasing viability of neoplastic cells

    The Regents of the University of California · Expires Sep 25, 2045

    granted

Frequently asked questions

What is US patent 8541231?

US 8541231 (Elimination of N-glycolylneuraminic acid from animal products for human use) is held by The Regents of the University of California. Status: granted. Granted Sep 24, 2013. Expires Sep 19, 2033 (7 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 8541231?

The Regents of the University of California is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 8,292 pharmaceutical patents for this assignee.

When does US 8541231 expire?

Our index shows an expiration date of Sep 19, 2033 (7 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.