Wednesday, June 10, 2026

Patent intelligence · EP

EP 3539539

TABLETTENFORMULIERUNGEN AUS (+)-2-[1-(3-ETHOXY-4-METHOXYPHENYL)-2-METHYLSULFONYLETHYL]-4-ACETYLAMINOISOINDOLIN-1,3-DION

granted A61K 9/ 20 A IA61K 9/ 28 A IA61K 9/ 50 A IA61K 31/ 4035 A I
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 13
Applicant portfolio 13
Patent details — EP 3539539
Jurisdiction
EP
Status
granted
Grant date
Sep 18, 2019
Expiration
Sep 13, 2039
Applicant
CELGENE CORP [US]
CPC classes
A61K 9/ 20 A I, A61K 9/ 28 A I, A61K 9/ 50 A I, A61K 31/ 4035 A I
View on Google Patents ↗

Quick answer

EP 3539539 (TABLETTENFORMULIERUNGEN AUS (+)-2-[1-(3-ETHOXY-4-METHOXYPHENYL)-2-METHYLSULFONYLETHYL]-4-ACETYLAMINOISOINDOLIN-1,3-DION) is held by CELGENE CORP [US]. Status: granted. Granted Sep 18, 2019. Expires Sep 13, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Applicant
CELGENE CORP [US]
Grant date
Expiration
Claims
CPC classes
A61K 9/ 20 A I, A61K 9/ 28 A I, A61K 9/ 50 A I, A61K 31/ 4035 A I, A61K/314035, A61K/92018

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Frequently asked questions

What is US patent 3539539?

EP 3539539 (TABLETTENFORMULIERUNGEN AUS (+)-2-[1-(3-ETHOXY-4-METHOXYPHENYL)-2-METHYLSULFONYLETHYL]-4-ACETYLAMINOISOINDOLIN-1,3-DION) is held by CELGENE CORP [US]. Status: granted. Granted Sep 18, 2019. Expires Sep 13, 2039 (13 years remaining) — relevant for patent-cliff and LOE planning.

Who owns EP 3539539?

CELGENE CORP [US] is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 13 pharmaceutical patents for this assignee.

When does EP 3539539 expire?

Our index shows an expiration date of Sep 13, 2039 (13 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.