The weekly litigation news digest is live. Subscribe now

IP Verse

Novel Lipids And Compositions For The Delivery Of Therapeutics - EP4241767

The patent EP4241767 was granted to Arbutus Biopharma on Oct 23, 2024. The application was filed on Nov 10, 2009 under application number EP23175192A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP4241767

ARBUTUS BIOPHARMA
Application Number
EP23175192A
Filing Date
Nov 10, 2009
Status
Granted And Under Opposition
Sep 20, 2024
Publication Date
Oct 23, 2024
External Links
Slate, Register, Google Patents

Patent Summary

Lipid particles comprising cationic lipids that enhance the delivery of therapeutic nucleic acids, including siRNA and plasmids, to cells. The particles contain a cationic lipid that provides enhanced membrane fluidity, while the therapeutic agent is encapsulated within the lipid particle. The lipid particles exhibit improved therapeutic index compared to conventional nucleic acid delivery systems, with enhanced activity and reduced toxicity. The lipid particles can be formulated for systemic delivery, including intracellular targeting, and are suitable for a wide range of therapeutic applications, including gene therapy, RNAi, and immunostimulation.

UPC Cases New

Latest UPC cases involving this patent.

Case NumberFiling DatePlaintiffProceeding Type
UPC_CFI_607/2025Jul 8, 2025ModernaCounter Claim For Revocation
UPC_CFI_192/2025Mar 3, 2025Arbutus Biopharma, Genevant SciencesInfringement

Patent Family

Patent Family

Patent Oppositions (4)

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
ARROWHOUSEJul 23, 2025VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBBADMISSIBLE
KELTIEJul 23, 2025-ADMISSIBLE
MERCK SHARP & DOHME UKJul 23, 2025COHAUSZ & FLORACKADMISSIBLE
MODERNAApr 29, 2025HOFFMANN EITLEADMISSIBLE

Patent Citations (236) New

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

Citation PhasePublication Number
DESCRIPTIONUS19340108339
DESCRIPTIONUS19380611854
DESCRIPTIONUS19390611714
DESCRIPTIONUS19500611543
DESCRIPTIONUS19730109468
DESCRIPTIONUS19790611131
DESCRIPTIONUS19850109161
DESCRIPTIONUS19950486214
DESCRIPTIONUS19980612258
DESCRIPTIONUS19980612340
DESCRIPTIONUS20050115989
DESCRIPTIONUS20070657341
DESCRIPTIONUS20070944227
DESCRIPTIONUS20090502158
DESCRIPTIONWO1992US04294
DESCRIPTIONWO1992US04305
DESCRIPTIONWO2004US07070
DESCRIPTIONEP0360257
DESCRIPTIONUS105
DESCRIPTIONUS3687808
DESCRIPTIONUS3993754
DESCRIPTIONUS4145410
DESCRIPTIONUS4224179
DESCRIPTIONUS4235871
DESCRIPTIONUS4469863
DESCRIPTIONUS4522803
DESCRIPTIONUS4587044
DESCRIPTIONUS4588578
DESCRIPTIONUS4603044
DESCRIPTIONUS4605735
DESCRIPTIONUS4667025
DESCRIPTIONUS4737323
DESCRIPTIONUS4762779
DESCRIPTIONUS4789737
DESCRIPTIONUS4824941
DESCRIPTIONUS4828979
DESCRIPTIONUS4835263
DESCRIPTIONUS4876335
DESCRIPTIONUS4904582
DESCRIPTIONUS4948882
DESCRIPTIONUS4957773
DESCRIPTIONUS4958013
DESCRIPTIONUS4987071
DESCRIPTIONUS5013556
DESCRIPTIONUS5023243
DESCRIPTIONUS5059528
DESCRIPTIONUS5082830
DESCRIPTIONUS5109124
DESCRIPTIONUS5112963
DESCRIPTIONUS5116739
DESCRIPTIONUS5118802
DESCRIPTIONUS5130302
DESCRIPTIONUS5138045
DESCRIPTIONUS5142047
DESCRIPTIONUS5149782
DESCRIPTIONUS5168045
DESCRIPTIONUS5177189
DESCRIPTIONUS5177198
DESCRIPTIONUS5182364
DESCRIPTIONUS5214136
DESCRIPTIONUS5218
DESCRIPTIONUS5223618
DESCRIPTIONUS5235033
DESCRIPTIONUS5245022
DESCRIPTIONUS5254469
DESCRIPTIONUS5256775
DESCRIPTIONUS5258506
DESCRIPTIONUS5262536
DESCRIPTIONUS5264562
DESCRIPTIONUS5264564
DESCRIPTIONUS5272250
DESCRIPTIONUS5286634
DESCRIPTIONUS5292873
DESCRIPTIONUS5317098
DESCRIPTIONUS5334711
DESCRIPTIONUS5359044
DESCRIPTIONUS5366878
DESCRIPTIONUS5371241
DESCRIPTIONUS5378825
DESCRIPTIONUS5386023
DESCRIPTIONUS5391723
DESCRIPTIONUS5414077
DESCRIPTIONUS5416203
DESCRIPTIONUS5451463
DESCRIPTIONUS5457191
DESCRIPTIONUS5459255
DESCRIPTIONUS5473039
DESCRIPTIONUS5476925
DESCRIPTIONUS5484908
DESCRIPTIONUS5486603
DESCRIPTIONUS5489677
DESCRIPTIONUS5508270
DESCRIPTIONUS5510475
DESCRIPTIONUS5512439
DESCRIPTIONUS5512667
DESCRIPTIONUS5514785
DESCRIPTIONUS5519134
DESCRIPTIONUS5525465
DESCRIPTIONUS5525472
DESCRIPTIONUS5532130
DESCRIPTIONUS5534499
DESCRIPTIONUS5539083
DESCRIPTIONUS5541313
DESCRIPTIONUS5545730
DESCRIPTIONUS5552538
DESCRIPTIONUS5565552
DESCRIPTIONUS5567810
DESCRIPTIONUS5574142
DESCRIPTIONUS5578717
DESCRIPTIONUS5578718
DESCRIPTIONUS5580731
DESCRIPTIONUS5585481
DESCRIPTIONUS5587371
DESCRIPTIONUS5591317
DESCRIPTIONUS5591584
DESCRIPTIONUS5595726
DESCRIPTIONUS5597696
DESCRIPTIONUS5599923
DESCRIPTIONUS5599928
DESCRIPTIONUS5608046
DESCRIPTIONUS5610288
DESCRIPTIONUS5614617
DESCRIPTIONUS5631359
DESCRIPTIONUS5672662
DESCRIPTIONUS5672685
DESCRIPTIONUS5688941
DESCRIPTIONUS5714166
DESCRIPTIONUS5718709
DESCRIPTIONUS5721114
DESCRIPTIONUS5739119
DESCRIPTIONUS5747470
DESCRIPTIONUS5759829
DESCRIPTIONUS5783683
DESCRIPTIONUS5789573
DESCRIPTIONUS5801154
DESCRIPTIONUS5820873
DESCRIPTIONUS5834596
DESCRIPTIONUS5840688
DESCRIPTIONUS5876968
DESCRIPTIONUS5885613
DESCRIPTIONUS5976567
DESCRIPTIONUS6004925
DESCRIPTIONUS6027726
DESCRIPTIONUS6037323
DESCRIPTIONUS6046166
DESCRIPTIONUS6153737
DESCRIPTIONUS6172208
DESCRIPTIONUS6287591
DESCRIPTIONUS6300319
DESCRIPTIONUS6320017
DESCRIPTIONUS6335434
DESCRIPTIONUS6335437
DESCRIPTIONUS6372886
DESCRIPTIONUS6395437
DESCRIPTIONUS6444806
DESCRIPTIONUS6486308
DESCRIPTIONUS6525031
DESCRIPTIONUS6528631
DESCRIPTIONUS6559279
DESCRIPTIONUS6858225
DESCRIPTIONWO0044895
DESCRIPTIONWO0175164
DESCRIPTIONWO0244321
DESCRIPTIONWO2007095387
DESCRIPTIONWO2008036825
DESCRIPTIONWO8604920
DESCRIPTIONWO8702062
DESCRIPTIONWO9103162
DESCRIPTIONWO9207065
DESCRIPTIONWO9220822
DESCRIPTIONWO9220823
DESCRIPTIONWO9315187
DESCRIPTIONWO9323569
DESCRIPTIONWO9402595
DESCRIPTIONWO9413688
DESCRIPTIONWO9611266
OPPOSITIONCA2271582
OPPOSITIONUS2004009943
OPPOSITIONUS2004032037
OPPOSITIONUS2005064595
OPPOSITIONUS2005255153
OPPOSITIONUS2006008910
OPPOSITIONUS2006240554
OPPOSITIONUS2007042031
OPPOSITIONUS2007260055
OPPOSITIONUS2008020058
OPPOSITIONUS2009175930
OPPOSITIONUS5965434
OPPOSITIONUS6287591
OPPOSITIONUS6320017
OPPOSITIONUS6835395
OPPOSITIONWO0062813
OPPOSITIONWO0105374
OPPOSITIONWO0115726
OPPOSITIONWO03070735
OPPOSITIONWO2004002453
OPPOSITIONWO2004002468
OPPOSITIONWO2005035764
OPPOSITIONWO2005063305
OPPOSITIONWO2005063306
OPPOSITIONWO2005120152
OPPOSITIONWO2006002538
OPPOSITIONWO2006007712
OPPOSITIONWO2006053430
OPPOSITIONWO2006138380
OPPOSITIONWO2007012191
OPPOSITIONWO2007022152
OPPOSITIONWO2007051303
OPPOSITIONWO2007056861
OPPOSITIONWO2007086881
OPPOSITIONWO2007112107
OPPOSITIONWO2008043575
OPPOSITIONWO2008103276
OPPOSITIONWO2009082817
OPPOSITIONWO2009086558
OPPOSITIONWO2009088891
OPPOSITIONWO2009097332
OPPOSITIONWO2009127060
OPPOSITIONWO2009129319
OPPOSITIONWO2009132131
OPPOSITIONWO2010037539
OPPOSITIONWO2010042877
OPPOSITIONWO2010048228
OPPOSITIONWO2010088927
OPPOSITIONWO2010105209
OPPOSITIONWO2010129687
OPPOSITIONWO2010144740
OPPOSITIONWO2011000106
OPPOSITIONWO2011000107
OPPOSITIONWO2011000108
OPPOSITIONWO2011003834
OPPOSITIONWO9527478
OPPOSITIONWO9851278
OPPOSITIONWO9939740
SEARCHDE3402146
SEARCHUS6320017

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.

  • Date

    Description

  • Get instant alerts for new documents