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IP Verse

Oral Formulations Of Cytidine Analogs And Methods Of Use Thereof - EP3692983

The patent EP3692983 was granted to Celgene on Aug 11, 2021. The application was originally filed on May 14, 2009 under application number EP19213148A. The patent is currently recorded with a legal status of "Opposition Rejected".

EP3692983

CELGENE
Application Number
EP19213148A
Filing Date
May 14, 2009
Status
Opposition Rejected
Sep 6, 2025
Publication Date
Aug 11, 2021
External Links
Slate, Register, Google Patents

Patent Summary

Oral formulations of cytidine analogs like 5-azacytidine for treating diseases like cancer that avoid the need for enteric coating to protect the drugs from stomach acid. The compositions are immediate release tablets or capsules that release the drug substantially in the stomach following oral administration. This enables higher doses, improved pharmacokinetics, and convenience compared to enteric-coated formulations. The compositions may contain excipients and permeation enhancers but avoid cytidine deaminase inhibitors.

Patent Family

Patent Family

Patent Oppositions (6)

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentativeOpposition Status
GENERICS UKMay 11, 2022ELKINGTON AND FIFEADMISSIBLE
STADA ARZNEIMITTELMay 11, 2022KERNEBECKADMISSIBLE
HOFFMANN EITLEMay 10, 2022HOFFMANN EITLEADMISSIBLE
TEVA PHARMACEUTICALSMay 10, 2022D YOUNGADMISSIBLE
SANDOZMay 9, 2022TER MEER STEINMEISTER & PARTNERADMISSIBLE
LOTUS PHARMACEUTICALApr 29, 2022HAMM & WITTKOPPADMISSIBLE

Patent Citations (34) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONUS20010990061
DESCRIPTIONUS20050213823
DESCRIPTIONUS20070698983
DESCRIPTIONUS20070849958
DESCRIPTIONUS20080029134
DESCRIPTIONUS20080045823
DESCRIPTIONWO2008US52124
DESCRIPTIONUS2002051820
DESCRIPTIONUS2003039688
DESCRIPTIONUS2003104053
DESCRIPTIONUS2003104062
DESCRIPTIONUS2004162263
DESCRIPTIONUS2008057086
DESCRIPTIONUS4810643
DESCRIPTIONUS4999291
DESCRIPTIONUS5229496
DESCRIPTIONUS5391485
DESCRIPTIONUS5393870
DESCRIPTIONUS5528823
DESCRIPTIONUS5580755
DESCRIPTIONUS7038038
DESCRIPTIONUS7189740
DESCRIPTIONWO2008092127
DESCRIPTIONWO2009042767
OPPOSITIONEP2299984
OPPOSITIONUS2004186065
OPPOSITIONUS2006074046
OPPOSITIONWO2006034154
OPPOSITIONWO2008028193
OPPOSITIONWO2009013988
OPPOSITIONWO2009139888
OPPOSITIONWO2011014541
SEARCHUS2004186065
SEARCHWO2008028193

Dossier Documents

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

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