EX-99.3 22 a2104577zex-99_3.htm EXHIBIT 99.3
QuickLinks -- Click here to rapidly navigate through this document


Exhibit 99.3


U.S. Patents Owned or Licensed by MedImmune, Inc.*

Product/ Project

  US Patent
No.

  Subject Matter
  Expiration Date
E. coli   4,795,803   Adhesin antigens   1/3/2006
    5,804,198   Adhesin vaccines   9/8/2015
    6,291,649   Anti-adhesin antibodies   3/2/2005
    6,500,434   Chaperone and Adhesin Proteins: Vaccines, Diagnostic and Methods for Treating Infections   4/23/2019
Vitaxin   5,753,230   Use of antibodies anti- avb3 antibodies to inhibit angiogenesis in tumors and inflamed tissue   5/19/2015
MEDI-507   5,730,979   Anti-CD2 antibodies and their use in treating T-cell mediated immune responses   3/24/2015
    5,951,983   Anti-CD2 antibodies and their use in treating T-cell mediated immune responses   9/14/2016
    5,817,311   Use of anti-CD2 antibodies in treating T-cell mediated immune responses   10/6/2015
HPV   6,228,368   Capsomeres containing HPV L1 protein and their use in preventing and treating HPV infection   10/6/2017
    6,066,324   HPV VLPs containing L1 protein with deletions   10/9/2015
    6,261,765   Disassembly/reassembly of Papillomavirus Virus Like Particles   9/5/2017
    6,165,471   HPV capsomeres with reduced assembly capacity   7/2/2018
    6,153,201   Oral Immunization with Papillomavirus Virus Like Particles   3/9/2013
    6,361,778   Papillomavirus Like Particles, Fusion Proteins as well as Processes for Their Production   9/16/2019
    6,416,945   Disassembly/reassembly of Papillomavirus Virus Like Particles   9/5/2017
RSV   5,824,307   Synagis® & other anti-RSV antibodies and their use in treating or preventing RSV infection   10/20/2015
    5,582,827   Immunoglobulin from plasma for treatment of RSV   12/10/2013
    4,800,078   Treatment of respiratory disease caused by RSV using human gamma globulin   1/24/2006
    5,412,077   Effective Antibody Titers Against Respiratory Viruses   8/4/2020
Strep   5,928,900   Pad1 protein   7/27/2016
    5,981,229   DNA encoding Exp1 and PlpA proteins   11/9/2016
    5,834,278   DNA encoding pneumococcal MsrA   5/1/2016
    6,245,335   Streptococcal choline binding proteins   5/1/2017
    5,736,367   Vectors and Prokaryotes which Autocatalytically Delete Resistance   4/7/2018
    5,798,243   Bacterial Peptide Methionine Sulfoxide Reductase an Adhesion Associated Protein, and Antibiotic Therapies   5/1/2016
    6,420,135   Streptococcus pneumoniae polynucleotides and sequences   10/03/17
    6,503,511   Derivatives of Choline Binding Proteins for Vaccines   4/6/2019
IL-9   5,157,112   Antibodies which specifically bind mammalian T cell growth factor P40   10/20/2009
    6,037,149   DNA and RNA molecules that encode Met-IL-9 and their use for recombinant production   8/23/2016
    5,580,753   DNA molecules encoding IL-9 and their use for recombinant production   12/3/2013
    5,734,037   Nucleic acid molecules that hybridize to DNA encoding IL-9   5/23/2009
    5,414,071   Human IL-9 protein   5/9/2012
    5,164,317   Method for enhancing proliferation of mast cells using IL-9   3/23/2010
    5,132,109   Method for enhancing IgG production using IL-9 and IL-4   10/5/2010
    5,246,701   Method to inhibit IgE production using anti-IL-9 antibodies or other IL-9 inhibitors   10/5/2010

    5,962,269   Processes and hybridomas for producing anti-IL-9 receptor antibodies   10/5/2016
    6,261,559   Treating asthmatic symptoms using anti-IL-9 antibodies   8/23/2016
    5,789,237   Nucleic acid molecules that hybridize to DNAs encoding human and murine IL-9 receptors   8/4/2015
    5,750,377   Methods for production of mammalian T cell growth factor P40   5/12/2015
    5,116,951   IL-9 receptor protein   9/19/2010
    5,587,302   Nucleic acid molecules encoding mammalian T cell growth factor P40   12/24/2013
    5,208,218   Mammalian T cell growth factor P40 protein   5/4/2010
    5,180,678   Methods of detecting IL-9   9/19/2010
Ethyol   5,424,471   Process for preparing crystalline forms   7/13/2012
    5,591,731   Dosage forms of crystalline amifostine   7/31/2012
    5,824,664   Agents and methods for inhibiting HIV viral and protein expression using compounds that belong to a family which contains amifostine   10/20/2015
    5,846,958   Methods of stimulating hematopoietic progenitor cells using a compound that belong to a family which contains amifostine   12/8/2015
    5,906,984   Methods of stimulating hematopoietic progenitor cells using specific compounds, which include amifostine   2/17/2015
    5,994,409   Methods of treating toxicities associated with chemotherapy, a method of treating a nephrodisorder, and a method of treating xerostomia, all of which use a compound that belongs to a family which contains amifostine   12/9/2017
    6,051,563   Subcutaneous administration, method of protecting against toxicities associated with ionizing radiation   2/12/2017
    6,127,351   Methods of treating or protecting against toxicities associated with chemotherapy using a specific dosing regime, a method of stimulating bone marrow growth, and a method of treating myelodysplastic syndrome, all of which use a compound that belongs to a family which contains amifostine   2/12/2017
    6,218,377   Methods of treating or protecting against toxicities associated with specific chemotherapy agents, and a method of protecting normal tissue in cancer patients, both of which use a compound that belongs to a family which contains amifostine   2/12/2017
    6,239,119   Methods of treating damaged or infected mucosal tissue using a compounds that belongs to a family which contains amifostine   4/26/2019
    6,384,259   Stable Amorphous Amifostine Composition and Methods for the Preparation and Use of the Same   11/16/2018
    6,407,278   Stable Amorphous Amifostine Composition and Methods for the Preparation and Use of the Same   11/16/2018
    6,489,312   Novel Pharmaceutical Formulations Comprising Aminoalkyl Phosphorothioates   6/15/2019
NeuTrexin   5,716,960   Cystalline glucuronate hydrate salt   2/10/2015
    6,017,921   Crystalline glucuronate salt   1/13/2015
    6,017,922   Thermally stable crystalline non-salts   5/18/2018
    6,258,821   Trimetrexate ascorbate and compositions comprising trimetrexate and ascorbic acid   4/26/2019
    6,258,952   Methods of producing monohydrate   5/18/2018
    4,376,858   2,4-Diamino-5-methyl-6-[(3,4,5-
trimethoxyanilino)methyl]quinazoline salts
  10/31/2004
    4,694,007   Use of Trimetrexate as Antiparasitic Agent   9/15/2006
    4,677,219   Substituted Benzonitriles   7/17/2006

    5,160,727   Tumor Cell Sensitization Method   3/21/2010
PALA   5,491,135   Methods of treating a viral infections (e.g., hepatitis B and C and secondary to HIV 1)   2/13/2013
Platinum   4,895,935   Platinum Pharmaceuticals   1/23/2007
CMV   6,291,236   Human CMV sequences and attenuated viruses   3/31/2015
    5,925,751   Human CMV sequences and attenuated viruses   3/31/2015
    5,721,354   Human CMV sequences and attenuated viruses   3/31/2015
    6,040,170   Human CMV sequences and attenuated viruses   3/31/2015
EBV   4,707,358   Epstein-Barr virus gp350 subunit protein vaccine   11/17/2004
    6,054,130   Non-splicing variants of EBV gp350 protein and gene   4/18/2014
    5,824,508   Non-splicing variants of EBV gp350 protein and gene   4/18/2014
    6,458,364   Non-Splicing Variants of GP350/220   04/24/2020
Influenza   5,690,937   Temperature sensitive mutants of influenza   6/5/2015
    6,090,391   Recombinant tryptophan mutants of influenza PB2 gene   2/23/2016
    6,322,967   Recombinant tryptophan mutants of influenza PB2 gene   2/23/2016
HSV   4,554,159   Vaccine against HSV-1 and HSV-2   11/19/2002
    4,769,331   Recombinant herpes simplex cloning methods and materials   9/6/2005
    4,859,587   Recombinant herpes simplex vectors and vaccines   8/22/2006
    5,288,641   Herpes simplex as a vector   2/22/2011
    5,328,688   Recombinant herpes simplex with 34.5 gene knockout   6/12/2011
    5,599,691   Herpes simplex as a vector   2/4/2014
    5,641,651   Synthetic HSV promoters and uses   6/24/2014
    5,714,153   Recombinant herpes simplex vaccines and vectors   12/23/2012
    5,846,707   Herpes simplex as a vector   6/4/2004
    5,922,328   Gamma 34.5 mutants of herpes simplex viruses   9/11/2016
    6,071,692   Herpes simplex as a gene expression vector and vaccine   6/4/2004
    6,120,773   Gamma 34.5 gene modification of herpes simplex viruses   9/19/2017
    6,172,047   Herpes viruses modified for use as cancer treatment   1/9/2018
Negative Stranded RNA Viruses   5,166,057   Recombinant negative strand RNA viruses   11/24/2009
    5,578,473   Recombinant negative strand RNA viruses   11/24/2009
    5,786,199   Recombinant negative strand RNA viruses and vaccines   7/28/2015
    5,820,871   Recombinant negative strand RNA viruses — bicistronic   10/13/2015
    5,854,037   Recombinant negative strand RNA viruses   12/29/2015
    6,001,634   Recombinant negative strand RNA viruses   8/28/2009
    6,022,726   Attenuated negative strand RNA viruses and methods   2/8/2017
    6,316,243   Recombinant attenuated double strand RNA viruses   11/13/2018
    5,840,520   Recombinant RSV viruses   11/24/2015
VZV   6,087,170   VZV gene and mutant VZV viruses   4/28/2014
*
The Company encourages any interested investor to obtain an independent legal analysis of the precise scope of the claims of the patents listed above.



QuickLinks

U.S. Patents Owned or Licensed by MedImmune, Inc.