Wednesday, July 8, 2026

Patent intelligence · US

US 8273343

Protein-polymer conjugates

granted A61KA61K38/1816A61K38/215A61K38/27
Status granted
Linked drugs 3
Pipeline programs 3
Years to expiry 6
Applicant portfolio 95
Patent details — US 8273343
Jurisdiction
US
Status
granted
Grant date
Sep 25, 2012
Expiration
Sep 20, 2032
Claims
18
CPC classes
A61K, A61K38/1816, A61K38/215, A61K38/27
View on Google Patents ↗

Quick answer

US 8273343 (Protein-polymer conjugates) is held by PHARMAESSENTIA CORPORATION. Status: granted. Granted Sep 25, 2012. Expires Sep 20, 2032 (6 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
18
CPC classes
A61K, A61K38/1816, A61K38/215, A61K38/27, A61K47/60, A61P

More from PHARMAESSENTIA CORPORATION

Related pharmaceutical patents in our USPTO index.

  1. US 12419895

    Methods for treating subjects with Prader-Willi syndrome

    ESSENTIALIS, INC. · Expires Sep 18, 2045

    granted
  2. US 12350258

    Compositions and methods for treatment of skin-related diseases and promoting dermatological health

    Script Essentials, LLC · Expires Jul 3, 2045

    granted
  3. US 12343348

    Methods for treating subjects with Prader-Willi syndrome or Smith-Magenis syndrome

    ESSENTIALIS, INC. · Expires Jun 26, 2045

    granted
  4. US 12343381

    Dosage regimen for pegylated interferon

    PHARMAESSENTIA CORPORATION · Expires Jun 26, 2045

    granted
  5. US 12178823

    Methods for treating subjects with Prader-Willi syndrome or Smith-Magenis syndrome

    ESSENTIALIS, INC. · Expires Dec 26, 2044

    granted
  6. US 12109216

    Methods for treating subjects with Prader-Willi syndrome or Smith-Magenis syndrome

    ESSENTIALIS, INC. · Expires Oct 3, 2044

    granted
  7. US 12005081

    Chimeric receptors and methods of use thereof

    Senti Biosciences, Inc. · Expires Jun 6, 2044

    granted
  8. US 11884656

    Pyrrole derivatives as PLK1 inhibitors

    SENTINEL ONCOLOGY LIMITED · Expires Jan 25, 2044

    granted

Frequently asked questions

What is US patent 8273343?

US 8273343 (Protein-polymer conjugates) is held by PHARMAESSENTIA CORPORATION. Status: granted. Granted Sep 25, 2012. Expires Sep 20, 2032 (6 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 8273343?

PHARMAESSENTIA CORPORATION is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 95 pharmaceutical patents for this assignee.

When does US 8273343 expire?

Our index shows an expiration date of Sep 20, 2032 (6 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.