Wednesday, July 8, 2026

Patent intelligence · US

US 8987305

2,4,5-trisubstituted imidazoles and their use as anti-microbial agents

granted A61KA61K31/4164A61K31/4178A61K31/4184
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 9
Applicant portfolio 7
Patent details — US 8987305
Jurisdiction
US
Status
granted
Grant date
Mar 24, 2015
Expiration
Mar 19, 2035
Claims
57
CPC classes
A61K, A61K31/4164, A61K31/4178, A61K31/4184
View on Google Patents ↗

Quick answer

US 8987305 (2,4,5-trisubstituted imidazoles and their use as anti-microbial agents) is held by APTOSE BIOSCIENCES INC.. Status: granted. Granted Mar 24, 2015. Expires Mar 19, 2035 (9 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
57
CPC classes
A61K, A61K31/4164, A61K31/4178, A61K31/4184, A61K31/4188, A61K31/4375

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Frequently asked questions

What is US patent 8987305?

US 8987305 (2,4,5-trisubstituted imidazoles and their use as anti-microbial agents) is held by APTOSE BIOSCIENCES INC.. Status: granted. Granted Mar 24, 2015. Expires Mar 19, 2035 (9 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 8987305?

APTOSE BIOSCIENCES INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 7 pharmaceutical patents for this assignee.

When does US 8987305 expire?

Our index shows an expiration date of Mar 19, 2035 (9 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.