`
`a2) United States Patent
`US 9,533,053 B2
`(10) Patent No.:
`
` Gamacheet al. (45) Date of Patent: *Jan. 3, 2017
`
`
`(54) HIGH CONCENTRATION OLOPATADINE
`OPHTHALMIC COMPOSITION
`
`USPC viececcesessesseeeseneeecenees 514/449, 450, 777, 778
`See application file for complete search history.
`
`(71) Applicant: Alcon Research, Ltd., Fort Worth, TX
`(US)
`
`(72)
`
`Inventors: Daniel A. Gamache, Arlington, TX
`(US); Laman Alani, Fort Worth, TX
`.
`(US); Malay Ghosh,Fort Worth, TX
`(US); Francisco Javier Galan, Teia
`(ES); Nuria Carreras Perdiguer,
`Barcelona (ES); Onkar N. Singh,
`A
`Arlington, TX (US)
`:
`(73) Assignee: Alcon Research, Ltd., Fort Worth, TX
`(US)
`
`(*) Notice:
`
`Subject to any disclaimer, the term ofthis
`i
`{
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 117 days.
`:
`:
`:
`:
`:
`This patent is subject to a terminal dis-
`claimer.
`
`(21) Appl. No.: 14/304,124
`
`22)
`(22)
`
`(65)
`
`Filed:
`
`Jun. 13, 2014
`,
`
`Prior Publication Data
`US 2014/0296328 Al
`Oct. 2, 2014
`
`Related U.S. Application Data
`(63) Continuation of application No. 13/475,607, filed on
`May 18, 2012, now Pat. No. 8,791,154.
`(60) Provisional application No. 61/548,957,filed on Oct.
`19, 2011, provisional application No. 61/487,789,
`filed on May 19, 2011.
`
`ap
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`3.767788 A
`10/1973 Ranki
`in
`’
`4
`3,843,782 A
`10/1974 Krezanoski et al.
`3,856,919 A
`12/1974 Rankin
`3,931,319 A
`1/1976 Greenet al.
`Aor000 A
`3tony Gankin
`;
`027,
`reen et al.
`4,120,949 A
`10/1978 Bapatla et al.
`4,283,393 A
`8/1981 Field et
`al.
`4,407,791 A
`10/1983 Stak. ‘
`4,470,965 A
`9/1984 Wolf et al.
`4,525,346 A
`6/1985 Stark
`pees “ 1Hono Peunbiyi ¢ at
`71,
`ever,
`Jr. et al.
`4.923.693 A
`5/1990 Michslos
`5,037,647 A
`8/1991 Chowhan et al.
`5,068,225 A
`11/1991 Pennell et al.
`5116-863 A
`5/1992 Oshimaetal.
`5,134,127 A
`7/1992 Stella et al.
`5,141,961 A
`8/1992 Coapman
`5,300,287 A
`4/1994 Park
`5,342,620 A
`8/1994 Chowhan
`5,376,645 A
`12/1994 Stella et al.
`5,472,954 A
`12/1995 Loftsson
`5,591,426 A
`1/1997 Dabrowskiet al.
`5,597,559 A
`1/1997 Olejnik etal.
`5,624,962 A
`4/1997 Takeuchi etal.
`5,641,805 A
`6/1997 Hayakawaet al.
`(Continued)
`
`FOREIGN PATENT DOCUMENTS
`2 eg:ys BI
`500
`Continued
`(Continued)
`
`(51)
`
`Int. Cl.
`AGIK 31/335
`AOIN 43/02
`AGIK 47/00
`AG6IK 47/40
`AGIK 9/00
`AGIK 47/32
`AGIK 9/08
`A6IK 47/48
`CO8B 37/16
`CO8L 5/16
`AGIK 47/10
`B82Y 5/00
`(52) U.S. Cl.
`The present invention is an ophthalmic composition con-
`CPC vices A61K 47/40 (2013.01); 461K 9/0048
`taining a relatively high concentration of olopatadine. The
`(2013.01); A6IK 9/08 (2013.01); AGIK 31/335
`composition is typically an ophthalmic aqueous solution
`(2013.01); A6LK 47/10 (2013.01); AGLK 47/32
`containing relatively high concentrations of olopatadine
`(2013.01); A61K 47/48969 (2013.01); B82Y
`solubilized within the solution. The composition is prefer-
`5/00 (2013.01); CO8B 37/0015 (2013.01);
`CO8L 5/16 (2013.01)—_—_ably capable ofproviding enhancedrelief from symptoms of
`(58) Field of Classification Search
`ocular allergic conjunctivitis, particularly late phase symp-
`CPC we. A61K 47/40; A61K 47/10; A61K 9/08;
`toms of ocular allergic conjunctivitis.
`A61K 47/48969; A61K 47/32; A61K
`31/335; A61K 9/0048; B82Y 5/00; CO8L
`5/16; CO8B 37/0015
`
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2011.01)
`
`OTHER PUBLICATIONS
`— ;
`;
`;
`James I. McGill, “A review of the use of olopatadine in allergic
`conjunctivitis”, 2004,
`International Ophthalmology, 25(3):171-
`179."
`
`(Continued)
`
`Primary Examiner — My-Chau T Tran
`(74) Attorney, Agent, or Firm — Scott A. Chapple
`
`(57)
`
`ABSTRACT
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 1
`
`13 Claims, 5 Drawing Sheets
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 1
`
`
`
`US 9,533,053 B2
`
`Page 2
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`WO
`Wo
`Wo
`
`2010/107689
`2011138801 Al
`2012159064
`
`9/2010
`11/2011
`11/2012
`
`5,874,418 A
`5,888,493 A
`153746 ‘
`6,280,745 Bl
`6,316,483 Bl
`6,407,079 Bl
`6,511,949 Bl
`6,828,356 B2
`6,995,186 B2
`7,074,424 B2
`7,147,844 B2
`7,402,609 B2
`7,429,602 B2
`7,635,773 B2
`7,087,646 B2
`7,977,376 B2
`8,071,073 B2*
`8.399.508 B2
`8.79 1.154 B2
`
`2002/0006443 Al
`2002/0107238 Al
`
`2/1999 Stella etal.
`3/1999 Sawaya
`Hh3600 se “ al.
`8/2001 Flore etal.
`11/2001 Haslwanteret al.
`6/2002 Muller etal.
`1/2003 Nitta et al.
`12/2004 Suet al.
`2/2006 Castillo et al.
`7/2006 Avila et al.
`12/2006 Hamanoetal.
`7/2008 Castillo et al.
`9/2008 Trach et al.
`12/2009 Antle
`3/2010 Bader et al.
`7/2011 Singh et al.
`12/2011 Dango... A61K 9/0043
`3/2013 Singh et al.
`424/45
`7/2014 Gamache ............. A61K 9/0048
`514/449
`
`1/2002 Curatolo et al.
`8/2002 Bandyopadhyay...... B82Y 5/00
`§14/211.15
`
`OTHER PUBLICATIONS
`International Preliminary Report on Patentability for corresponding
`PCT/US2012/038663 with mailing date Nov. 28, 2013.
`Chigbu, “The management ofallergic eye disease in primary eye
`care”, Contact Lens & Anterior Eye, 32, pp. 260-272, 2009.
`Chigbu, “The pathophysiology ofocular allergy: A review”, Contact
`Lens & Anterior Eye, 32, pp. 3-15, 2009
`:
`: ip a
`:
`Ciprandi et al.,
`“Cetirizine reduces inflammatory cell recruitment
`and ICAM-1 (or CD54) expression on conjunctival epithelium in
`both early- and late-phase reactions after allergen-specific chal-
`lenge”, J Allergy Clin Immunol, vol. 95, No. 2, pp. 612-621, Feb.
`1995.
`Du Buske, “Clinical comparison of histamine H1-receptor antago-
`ist drugs”, J All
`Clin
`I
`1
`vol.
`98.
`No.
`6.
`part 3
`S307 Sa18, Dec 1006
`in Emm! VOR
`78)
`NO.
`Os
`Patt
`9+ PP.
`Fukudaet al., “Critical role of IgE-dependent mast cell activiation
`in a murine model of allergic conjunctivitis”, J Allergy Clin
`Immunol, vol. 124, No. 4, 827-833.e2, Oct. 2009.
`International Search Report
`for corresponding PCT/US2012/
`038663 with mailing date Jul. 25, 2012.
`International Written Opinion for corresponding PCT/US2012/
`038663 with mailing date Jul. 25, 2012.
`10/2002 Vandecruys
`2002/0150616 Al
`Izushi et al., “The role of histamine H1 receptors in late-phase
`3/2003 Castillo et al.
`2003/0055102 Al
`reaction of allergic conjunctivitis”, European Journal of Pharma-
`9/2003 Babcock etal.
`2003/0170309 Al
`cology, 440:79-82, 2002.
`10/2004 Abelsonetal.
`2004/0198828 Al
`Leonardi and Abelson, “Double-Masked, Randomized, Placebo-
`1/2005 Lyonset al.
`2005/0004074 Al
`wee
`9/2005 Gruening etal.
`2005/0191270 Al
`Controlled Clinical Study of the Mast Cell-Stabilizing Effects of
`10/2005 Abel
`tal
`3005/0239745 Al
`Treatment with Olopatadine in the Conjunctival Allergen Challenge
`11/2005 Hugheset al ,
`9005/0244472 Al
`Model in Humans”, Clinical Therapeutics, vol. 25, No. 10, pp.
`9/2006 Du Mee et al.
`2006/0210645 Al
`2539-2552, 2003.
`1/2007 Loftsson et al.
`2007/0020336 Al
`Ozakiet al., “Mast-cell activation augments the late phase reaction
`6/2008 Li et al.
`2008/0132444 Al
`in
`experimental
`immune-mediated
`blepharoconjunctivitis”,
`6/2008 Yanniet al.
`2008/0139531 Al
`Graefe’s Arch Clin Exp Ophthalmol, 241:394-402, 2003.
`5/2009 Rohrset al.
`2009/0118262 Al
`Ueta etal., letter to editor, “Development of eosinophilic conjunc-
`5/2009 Chapin etal.
`2009/0136598 Al
`tival inflammation at late-phase reaction in mst cell-deficient defi-
`6/2009 Hugheset al.
`2009/0156568 Al
`cient mice”, J Allergy Clin Immunol, pp. 476-478, Aug. 2007.
`9/2009 Kabra etal.
`2009/0232763 Al
`Vogelson et al., “Preclinical and Clinical Antiallergic Effect of
`9/2009 Trachet al.
`2009/0239842 Al
`Olopatadine 0.2% Solution 24 Hours after Topical Ocular Admin-
`1/2010 Chongetal.
`2010/0010082 Al
`istration”, Allergy and Asthma Proc., vol. 25, No. 1, pp. 69-75,
`9/2010 Abelson etal.
`2010/0240625 Al
`Jan.-Feb. 2004.
`9/2010 Matsumuraet al.
`2010/0249062 Al
`
`2010/0324031 Al—12/2010 Kabra Yanni et al., “The In Vitro and In Vivo Ocular Pharmacology of
`2011/0082145 Al
`4/2011 Schneideret al.
`Olopatadine (AL-4943A), an Effective Anti-Allegic/Antihistaminic
`2012/0015953 Al
`1/2012 Beauregard etal.
`Agent”, Journal of Ocular Pharmacology and Therapeutics, vol. 12,
`No. 4, 1996.
`Abelson et al., “Combined Analysis of Two Studies Using the
`Conjunctival Allergen Challenge Model to Evaluate Olopatadine
`Hydrochloride, a New Ophthalmic Antiallergic Agent With Dual
`Activity,” American Journal of Ophthalmology, vol. 125, No. 6, pp.
`797-804.
`Abelson and Anderson, “Demystifying Dumulcents,” Review of
`Ophthalmology, Nov. 2006, pp. 122-125.
`Ansel, Howard C., Pharmaceutical Calculations, 13th Ed., Wolters
`Kluwer, 2010, pp. 82-83.
`Chaudhari et al., “Solubility enhancement of hydrophobic drugs
`using synergistically interacting cyclodextrins and cosolvent,” Cur-
`rent Science, 1586 vol. 92, No. 11, Jun. 10, 2007; pp. 1586-1591.
`Choi, et al., “Late-phase reaction in ocular allergy,” Current Opinion
`in Allergy and Clinical Immunology, 2008, vol. 8, pp. 438-444.
`Gennaro, Alfonso R., Remington: The Science and Practice of
`volLoe Philadephia College of Pharmacy and Science, 1995,
`Gennaro, Alfonso R., Remington: The Science and Practice of
`Pharmacy, Philadelphia College of Pharmacy and Science, 1995,
`vol. 2, pp. 1563-1576.
`Harada, A., “Preparation and structures of supramolecules between
`cyclodextrins and polymers,” Coordination Chemistry Reviews,
`148, 1996, pp. 115-133.
`
`FOREIGN PATENT DOCUMENTS
`
`EP
`EP
`EP
`EP
`EP
`GB
`JP
`JP
`WO
`WO
`wo
`wo
`wo
`wo
`wo
`WO
`WO
`WO
`Wo
`
`0235796 B2
`9/1987
`I ot309 Bl i al
`Osostd
`003
`1 231 920
`2/2007
`1994 931
`11/2008
`2169508
`7/1986
`2001-158750
`6/2001
`2003520813
`7/2003
`88/08709
`11/1988
`90/04971
`5/1990
`91/09523
`7/1991
`nyigbes
`oyt905
`0078396 A2
`12/2000
`Oareg Al
`een
`03/013481
`2/2003
`2004024126 Al
`3/2004
`2006/011044
`2/2006
`2008/0 15695
`2/2008
`2009/003 199
`12/2008
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 2
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 2
`
`
`
`US 9,533,053 B2
`Page 3
`
`(56)
`
`References Cited
`OTHER PUBLICATIONS
`
`Jansook et al., “CDs as solubilizers: Effects of excipients and
`competing drugs,” International Journal of Pharmaceutics, 379,
`2009, pp. 32-40.
`Lide, David R., CRC Handbook of Chemistry and Physics, CRC
`Press, 2006, pp. 6-4-6-5.
`Loftsson et al., “Cyclodextrins in eye drop formulations: enhaned.
`topical delivery of corticosteroidsto the eye,” Acta Ophthamologica
`Scandinavica, 2002, pp. 144-150.
`Loftsson et al., “The effect of water-soluble polymers on the
`aqueous solubility and complexing abilities of B-cyclodextrin,”
`International Journal of Pharmaceutics, 1998, vol. 163, pp. 115-121.
`Loftsson, et al., “Pharmaceutical Applications of Cyclodextrins. 1.
`Drug Solubilization and. Stabilization,” Journal of Pharmaceutical
`Sciences, Oct. 1996, vol. 85, No. 10, pp. 1017-1025.
`Nandi et al., “Synergistic Effect of PEG-400 and Cyclodextrin to
`Enhance Solubility of Progesterone,” AAPS PharmSciTech 2003; 4
`(1), pp. 1-5.
`PATANOL®Label, Revised Aug. 2002.
`PATADAY® Label, Revised Aug. 2010.
`PATANASE® Label, Revised Mar. 2008.
`Polyvinylpyrrolidone K 30, http://www4.mpbio.com/ecom/docs/
`proddata.nsf/(webtds2)/102787, pp. 1-2.
`Proud, et al., “Inflammatory mediator release on conjunctival
`provocation ofallergic subjects with allergent provocation of aller-
`gic subjects with allergen,” Mediator generation in ocular allergy,
`1989, vol. 85, No. 5, pp. 896-905.
`Sharif, et al., “Characterization of the Ocular Antiallergic and
`Antihistaminic Effects of Olopatadine (AL-4943A), a Novel Drug
`for Treating Ocular Allergic Diseases,” The Journal of Pharmacol-
`ogy and Experimental Therapeutics, 1996, vol. 278, No. 3, pp.
`1252-1261.
`Swei, et al., “Viscosity Correlation for Aqueous Polyvinylpyr-
`rolidone (PVP) Solutions,” Journal of Applied Polymer Science,
`2003, vol. 90, pp. 1153-1155.
`
`United States District Court for the District of Delaware, Complaint,
`Alcon Research, Ltd. v. Watson Laboratories, Inc. et al., Dec. 16,
`2015, pp. 1-16.
`United States District Court for the District of Delaware, Defen-
`dants’ Answer, Separate Defenses, and Counterclaims, Alcon
`Research, Ltd. v. Watson Laboratories, Inc. et al., Feb. 29, 2016, pp.
`1-26.
`United States Patent and Trademark Office Before the Patent Trial
`and Appeal Board, Petition for Inter Partes Review, Argentum
`Pharmaceuticals LLC vy. Alcon Research, Ltd., U.S. Pat. No.
`8,791,154, Feb. 2, 2016, pp. 1-60.
`Wade et al., “Ophthalmic antihistamines and H1-H4 receptors,”
`Current Opinion in Allergy and Clinical Immunology, 2012, vol. 12,
`No. 5, pp. 510-516.
`Watson Laboratories, Inc., Notification of Certification for U.S. Pat.
`No. 8,791,154 Pursuant to § 505(G)(2)(B) (iv) of the Federal Food,
`Drug, and Cosmetic Act, Nov. 3, 2015, pp. 1-25.
`Petition for Inter Partes Review, Against Patent 8,791,154 by
`Argentum Pharmaceuticals LLC Feb. 2, 2016.
`Petition for Inter Partes Review, Against Patent 8,791,154 by
`Apotex Inc. and Apotex Corp. Aug. 18, 2016.
`Inter Partes Review No. 2016-00544. Exhibit 1002: Declaration of
`Dr. Eming Xia.
`Inter Partes Review No. 2016-00544. Exhibit 1003: Declaration of
`Dr. Leonard Bielory.
`Inter Partes Review No. 2016-00544. Exhibit 1024: Curriculum
`Vitae for Dr. Eming Xia.
`Inter Partes Review No. 2016-00544. Exhibit 1025: Curriculum
`Vitae for Dr. Leonard Bielory.
`1030: Alcon
`Inter Partes Review No. 2016-00544. Exhibit
`Research, Ltd. v. Apotex Inc., 687 F.3d 1362 (Fed. Cir. 2012).
`Inter Partes Review No. 2016-00544. Exhibit
`1031: Alcon
`Research, Ltd. v. Apotex Inc., 790 F. Supp. 2d. 868 (S.D. Ind. 2011).
`Inter Partes Review No. 2016-00544. Exhibit 1057: 21.C.F.R. §
`349.12.
`Inter Partes Review No. 2016-00544. Exhibit 1060: 68 Fed. Reg.
`106, 32981-32983.
`
`* cited by examiner
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 3
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 3
`
`
`
`U.S. Patent
`
`Jan. 3, 2017
`
`Sheet 1 of 5
`
`US 9,533,053 B2
`
`: #4 Glopatadine 0.77%
`344#4* Olopatadine 0.2%
`& © Vehicle
`
`Redness
`
`PMeanConjunctival
`
`Past-CAU Time (Minutes)
`
`FIG. 1
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 4
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 4
`
`
`
`U.S. Patent
`
`Jan. 3, 2017
`
`Sheet 2 of 5
`
`US 9,533,053 B2
`
`iH Olopatactine 0.77%
`5+ Olopatadine 0.2%
`& © 0 Veluele
`
`Fiecdhness
`
`KhieanConpnctval
`
`Post-CAC Time (Minutes)
`
`FIG.2
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 5
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 5
`
`
`
`U.S. Patent
`
`Jan. 3, 2017
`
`Sheet 3 of 5
`
`US 9,533,053 B2
`
`,
`
`
`eeeee .
`gfe -
`|
`
`#4 Olopatadine 0.77%
`“e+ Qlopatadine 0.2%
`cl &0 Vehile
`
`poo
`
`
`
`
`
`
`BeanDCotalReclness
`
`Post-CAC Time (Minutes)
`
`FIG. 3
`
`IPR2018-01020 and IPR2018-01021, Exhibit
`
`1002, Page 6
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 6
`
`
`
`U.S. Patent
`
`Jan. 3, 2017
`
`Sheet 4 of 5
`
`US 9,533,053 B2
`
`
`
`
`
`MeanOcularItching
`
`iH Olopatactine 0.77%
`55+ Olopatadine 0.2%
`& © 0 Veluele
`
`
`
`3
`
`4
`
`5
`
`6
`
`i
`
`Past-CAC Time(Minutes)
`
`FIG. 4
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 7
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 7
`
`
`
`U.S. Patent
`
`Jan. 3, 2017
`
`Sheet 5 of 5
`
`US 9,533,053 B2
`
`| #4 Slopatadine 0.77%
`5+ Olopatadine 0.2%
`
`Fiecdhness
`
`KhieanConpnctval
`
`Post-CAC Time (Minutes)
`
`FIG. 5
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 8
`
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 8
`
`
`
`US 9,533,053 B2
`
`1
`HIGH CONCENTRATION OLOPATADINE
`OPHTHALMIC COMPOSITION
`
`CROSS-REFERENCE TO RELATED
`APPLICATION
`
`This application is a continuation application of U.S.
`Utility patent application Ser. No. 13/475,607 filed May 18,
`2012 (now allowed), which claims priority based on U.S.
`Provisional Patent Application Ser. No. 61/487,789 filed
`May 19, 2011 and U.S. Provisional Patent Application Ser.
`No. 61/548,957 filed Oct. 19, 2011.
`
`TECHNICAL FIELD OF THE INVENTION
`
`The present invention relates to an ophthalmic composi-
`tion containing a relatively high concentration of olopata-
`dine. Moreparticularly, the present invention relates to an
`ophthalmic aqueous solution containing a relatively high
`concentration of solubilized olopatadine wherein the solu-
`tion is capable of providing enhancedrelief from symptoms
`of ocular allergic disorders (e.g., conjunctivitis) in the early
`phase, the late phase or preferably both phases.
`
`BACKGROUND OF THE INVENTION
`
`Individuals suffering from allergic conjunctivitis experi-
`ence symptomssuch as ocularirritation, itchiness, redness
`and the like. It has been found that these symptoms are
`significantly reduced using topical ophthalmic solutions
`containing olopatadine. Such solutions are sold under the
`tradenames PATANOL® and PATADAY®, which are both
`commercially available from Alcon Laboratories, Inc., Fort
`Worth, Tex.
`These marketed solutions were generally believed to be
`the most efficacious products known for addressing symp-
`toms of allergic conjunctivitis. Surprisingly, and as dis-
`cussed further below, it has been discovered that relatively
`high concentration solutions of olopatadine provide signifi-
`cantly improved reduction of late phase ocular allergic
`conjunctivitis symptoms in addition to relief from early
`phase symptoms. Even more surprising, it has been discov-
`ered that such high concentrations of olopatadine also pro-
`vide significantly improved reduction of redness in the early
`phase. Further, it has been discovered that enhancedrelief
`from these early and late phase symptoms can be achieved
`through once a day dosing ofrelatively high concentration
`olopatadine solution as opposed to greater dosing frequen-
`cies.
`
`The discovery of improved reduction of early and late
`phase symptomsis quite significant and desirable for indi-
`viduals suffering from allergic conjunctivitis. Generally,
`these discoveries can provide patients greater relief from
`itching and provide better aesthetic appearance to the eye.
`Further, avoiding more frequent dosing is more convenient
`for patients and helps assure better compliance. Furtheryet,
`improved early prevention and/or reduction of redness is
`particularly desirable since patients generally have a desire
`to keep as much redness out of their eyes as possible.
`The discovery that relatively high concentration solutions
`of olopatadine can relieve late phase ocular allergic con-
`junctivitis symptoms provides hope to sufferers of ocular
`allergic conjunctivitis that a single dose of olopatadine per
`day could provide a substantial degree of full day relief from
`their symptoms. However, the development of a multi-dose
`ophthalmic solution that includes high concentrations of
`
`15
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
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`2
`olopatadine necessary to achieve desired levels ofefficacy is
`extremely difficult and complex.
`Solubilizing high concentrations of olopatadinein a stable
`mannerhas proven difficult byitself. Olopatadine, byitself,
`is only soluble in water (pH about 7.0) at room temperature
`up to a concentration of about 0.18 w/v %. However, it is
`desirable to achieve solubilization of much higher concen-
`trations of olopatadine in an effort to treat late phase allergic
`conjunctivitis.
`Solubilizing such higher concentrations of olopatadine
`has proven difficult. As one example, excipients such as
`polyethylene glycol (PEG) 400 and polyvinylpyrrolidone
`(PVP), when used at reasonably desirable concentrations,
`have proven incapable, alone or in combination, of solubi-
`lizing sufficient concentrations of olopatadine in composi-
`tions having approximately neutral pH. Thus, innovation is
`required to solubilize a sufficient concentration of olopata-
`dine.
`In the process of such innovation, is has been discovered
`that higher molecular weight PEGs such as PEG 6000 can
`significantly enhance solubility of olopatadine. However,
`such PEGs cause risk of discomfort when administered to
`
`humans. It has also been discovered that cyclodextrins, such
`as hydroxypropyl-y-cyclodextrin, hydroxypropyl-f-cyclo-
`dextrin and sulfoalkyl ether-f-cyclodextrin, have the ability
`to solubilize significantly higher concentrations of olopata-
`dine. However, use of undesirably high concentrations of
`cyclodextrins has been found to reduce olopatadine efficacy
`and/or preservation efficacy of solutions. As such, still
`further innovation was needed to create a desirable olopa-
`tadine formulation that not only solubilized sufficient
`amounts of olopatadine, but also allowed the formulation to
`achieve other desirable pharmaceutical characteristics.
`Thus, the present invention is directed at an ophthalmic
`composition that can provide high concentrations of olopa-
`tadine topically to the eye. Further, the present invention is
`directed to such a composition wherein the olopatadine is
`solubilized in solution in a stable manner, the composition
`exhibits consistent eflicacy against late phase symptoms of
`allergic conjunctivitis, the composition exhibits sufficient
`antimicrobial activity to provide desired levels of preserva-
`tion efficacy or any combination thereof
`
`SUMMARY OF THE INVENTION
`
`The present invention is directed to an ophthalmic com-
`position for treatment of allergic conjunctivitis. The com-
`position will
`include a relatively high concentration of
`olopatadine, preferably at least 0.67 w/v % olopatadine,
`preferably dissolved in solution. The composition will typi-
`cally include a cyclodextrin, and moreparticularly, a y-cy-
`clodextrin derivative and/or a B-cyclodextrin derivative to
`aid in solubilizing the olopatadine. The cyclodextrin deriva-
`tive is preferably hydroxypropyl-y-cyclodextrin (HP-y-CD),
`hydroxypropyl-B-cyclodextrin (HP-B-CD), sulfoalkyl ether
`B-cyclodextrin (SAE-B-CD)(e.g., sulfobutyl ether B-cyclo-
`dextrin (SBE-B-CD)), or a combination thereof. The com-
`position will typically include a lactam polymer(e.g., poly-
`vinylpyrrolidone (PVP)) to aid in the solubilization of the
`olopatadine. The composition will also typically include a
`polyether (e.g., polyethylene glycol (PEG)) for enhancing
`solubility and/or aiding in achieving the desired tonicity. It
`is generally desirable for the composition to be disposed in
`an eyedropper, have a pH of 5.5 to 8.0, to have an osmolality
`of 200 to 450, to have a viscosity of 10 to 200 cps or any
`combination thereof. The composition will also typically
`include a preservative to allow the composition to achieve
`
`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 9
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`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 9
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`US 9,533,053 B2
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`3
`United States and/or European Pharmacopeia preservation
`standards. Preferred preservatives include a polymeric qua-
`ternary ammonium compound, such as polyquaternium-1,
`and benzalkonium chloride. The composition also typically
`includes borate and/or polyol to aid in achieving desired
`preservation.
`The present invention also contemplates a method of
`treating ocular allergy symptoms. The method will include
`topically applying a composition having a defined combi-
`nation of the characteristics described above to an eye of a
`human. This step of topically applying the composition
`preferably includes dispensing an eyedrop from an eyedrop-
`per.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`FIG.1 is a graph of mean conjunctival redness determined
`by a conjunctival allergen challenge (CAC) at 27 minutes.
`FIG.2 is a graph of mean conjunctival redness determined
`by a conjunctival allergen challenge (CAC) at 16 hours.
`FIG. 3 is a graph of mean total redness determined by a
`conjunctival allergen challenge (CAC) at 24 hours.
`FIG.4 is a graph of mean ocular itching determined by a
`conjunctival allergen challenge (CAC) at 24 hours.
`FIG. 5 is a graph of mean conjunctival redness determine
`by a conjunctival allergen challenge (CAC) at 24 hours.
`
`DETAILED DESCRIPTION OF THE
`INVENTION
`
`The present invention is predicated upon the provision of
`an ophthalmic composition for treatment of allergic con-
`junctivitis. The ophthalmic composition is preferably an
`aqueous solution. The ophthalmic composition includes a
`relatively high concentration of olopatadine solubilized in
`aqueoussolution. The ophthalmic composition also includes
`a unique set of excipients for solubilizing the olopatadine
`while maintaining comfort of the composition and/or effi-
`cacy of the composition in treating symptomsassociate with
`allergic conjunctivitis, particularly symptoms associated
`with late phase allergic conjunctivitis. Preferably, the com-
`position exhibits improved late phase efficacy in reducing
`ocular itching, ocular redness or both. The composition also
`preferably exhibits improved early phase efficacy in reduc-
`ing ocular redness relative to vehicle and/orrelative to lower
`concentrations of olopatadine. In a preferred embodiment,
`the ophthalmic composition is a multi-dose ophthalmic
`composition that also exhibits a required degree of preser-
`vation efficacy.
`Unless indicated otherwise, all component amounts(1.e.,
`concentrations) are presented on a weight volumepercent
`(w/v %) basis and all references to concentrations of olo-
`patadine are to olopatadine free base.
`Olopatadine is a known compoundthat can be obtained
`by the methods disclosed in U.S. Pat. No. 5,116,863, the
`entire contents of which are hereby incorporated by refer-
`ence in the present specification for all purposes. The
`formulation of the present invention containsat least 0.50%,
`more typically at least 0.55%, more typically at least 0.6%
`or 0.65%, even more typically at least 0.67% or 0.68%,still
`more typically at least 0.7%, possibly at least 0.75% and
`even possibly at least 0.85% but typically no greater than
`1.5% more typically no greater than 1.0%, still more typi-
`cally no greater than 0.8%, possibly no greater than 0.75%
`and even possibly no greater than 0.72% of olopatadine
`where concentrations of olopatadine typically represent con-
`centrations of olopatadine in free base form if the olopata-
`
`10
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`15
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`20
`
`25
`
`30
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`35
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`40
`
`45
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`50
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`55
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`60
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`65
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`4
`dine is added to the composition as a salt. These lowerlimits
`of concentrations of olopatadine are particularly important
`since it has been found that efficacy of olopatadine in
`aqueous ophthalmic solutions in reducing late phase allergy
`symptoms and enhanced reduction of early phase redness
`begins to show improvement at concentrations greater than
`0.5 w/v % of olopatadine and begins to showstatistically
`significant
`improvements in reducing late phase allergy
`symptomsat concentrations of about 0.7 w/v % olopatadine
`and above(e.g., at least 0.65 w/v %, at least 0.67 w/v % or
`at least 0.68 w/v %). Most preferably, the concentration of
`the olopatadine in the composition is 0.7 w/v %.
`Generally, olopatadine will be added in the form of a
`pharmaceutically acceptable salt. Examples of the pharma-
`ceutically acceptable salts of olopatadine include inorganic
`acid salts such as hydrochloride, hydrobromide, sulfate and
`phosphate; organic acid salts such as acetate, maleate,
`fumarate,
`tartrate and citrate; alkali metal salts such as
`sodium salt and potassium salt; alkaline earth metal salts
`such as magnesium salt and calcium salt; metal salts such as
`aluminumsalt and zinc salt; and organic amine addition salts
`such as triethylamine addition salt (also known as trometh-
`amine), morpholine addition salt and piperidine addition
`salt. The most preferred form of olopatadine for use in the
`solution compositions of the present invention is the hydro-
`chloride salt of (Z)-11-(-dimethylaminopropylidene)-6,11-
`dihydro-dibenz-[b,e]oxepin-2-acetic acid. When olopata-
`dine is added to the compositions of the present invention in
`this salt form, 0.77% olopatadine hydrochloride is equiva-
`lent
`to 0.7% olopatadine free base, 0.88% olopatadine
`hydrochloride is equivalent to 0.8% olopatadine free base,
`and 0.99% olopatadine hydrochloride is equivalent to 0.9%
`olopatadine free base.
`Generally, it is preferred that the entire concentration of
`olopatadineis dissolved in the composition as a water based
`or aqueous solution. However, it is contemplated that olo-
`patadine could be only partially dissolved. For example, a
`portion of the olopatadine could be in solution with the
`remainder being in suspension.
`The composition of the present invention also preferably
`includes cyclodextrin derivative and more preferably B-cy-
`clodextrin derivative, y-cyclodextrin derivative or both to
`aid in solubilizing the olopatadine(i.e., as a solubilizer). The
`B-cyclodextrin derivative, y-cyclodextrin derivative or com-
`bination thereof is typically present in the composition at a
`concentration that is at least 0.5% w/v, more typically at
`least 1.0% w/v and even possibly at least 1.3% w/v, but is
`typically no greater than 4.0% w/v,typically no greater than
`3.2% w/v and even possibly no greater than 2.8% w/v.
`Preferably, the total concentration of cyclodextrin is from
`0.9 wiv % to 3.2 wiv %.
`The specific amount of B-cyclodextrin derivative, y-cy-
`clodextrin derivative or combination thereof in a particular
`composition will typically depend upon the type or combi-
`nation of types of derivatives used. Oneparticularly desir-
`able B-cyclodextrin derivative is a hydroxy alkyl-p-cyclo-
`dextrin such as hydroxypropyl-B-cyclodextrin (HP-B-CD).
`One particularly desirable y-cyclodextrin derivative is a
`hydroxy alkyl-y-cyclodextrin such as hydroxypropyl-y-cy-
`clodextrin (HP-y-CD). Another particularly desirable B-cy-
`clodextrin derivative is
`sulfoalkyl ether-$-cyclodextrin
`(SAE-B-CD), particularly sulfobutyl ether-B-cyclodextrin
`(SBE-B-CD).
`It
`is contemplated that a combination of
`hydroxypropyl-B-cyclodextrin, hydroxypropyl-y-cyclodex-
`trin and/or sulfoalky] ether-B-cyclodextrin derivative may be
`employed in a single composition, but it is typically desir-
`able to use only oneofthe three as the sole or substantially
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`IPR2018-01020 and IPR2018-01021, Exhibit 1002, Page 10
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`US 9,533,053 B2
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`5
`the sole (ie., at least 90% by weight of the cyclodextrin
`component) cyclodextrin derivative.
`When HP-B-CD is employed as the sole or substantially
`sole B-cyclodextrin derivative, it is typically present in the
`composition at a concentration that is at least 0.5% w/v,
`moretypically at least 1.0% w/v and even moretypically at
`least 1.3% w/v, but is typically no greater than 3.0% w/v,
`typically no greater than 2.2% w/v andis typically no greater
`than 1.7% w/v. When HP-y-CD is employed as the sole or
`substantially sole y-cyclodextrin derivative,
`it is typically
`present in the composition at a concentration that is at least
`0.5% w/v, more typically at least 1.0% w/v and even more
`typically at least 1.3% w/v, but is typically no greater than
`3.0% w/v, typically no greater than 2.2% w/v andis typically
`no greater than 1.7% w/v. When SAE-B-CD is employed as
`the sole or substantially sole B-cyclodextrin derivative, it is
`typically present in the composition at a concentration that
`is at least 0.3% w/v, more typically at least 0.7% w/v and
`even more typically at least 0.9% w/v, but is typically no
`greater than 2.4% w/y, typically no greater than 1.5% w/v
`and is typically no greater than 1.1% w/v.
`HP-B-CD is a commodity product and pharmaceutical
`grades of HP-B-CD can be purchased from a variety of
`sources, for example, from SIGMA ALDRICH, which has
`its corporate headquarters in St. Louis, Mo. or ASHLAND
`SPECIALTY INGREDIENTS, headquartered in Wayne,
`N.J. HP-y-CD is a commodity product and pharmaceutical
`grades of HP-y-CD can be purchased from a variety of
`sources, for example, from SIGMA ALDRICH, which has
`its corporate headquarters in St. Louis, Mo. or ASHLAND
`SPECIALTY INGREDIENTS, headquartered in Wayne,
`N.J. SAE-B-CD can be formed based upon the teachings of
`USS. Pat. Nos. 5,134,127 and 5,376,645, which are incor-
`porated herein by reference forall purposes. It is generally
`preferred, however,
`to use purified SAE-B-CD. Purified
`SAE-B-CD is preferably formed in accordance with the
`teachings of U.S. Pat. Nos. 6,153,746 and 7,635,773. Puri-
`fied SAE-B-CD is commercially available under the trade-
`name CAPTISOL® from CyDex Pharmaceuticals,
`Inc.,
`Lenexa, Kans.
`With regard to y-cyclodextrin derivative and B-cyclodex-
`trin derivative in the composition of the present invention, it
`has been found that undesirably high concentrations of
`y-cyclodextrin derivative and/or 6-cyclodextrin derivative
`can significantly interfere with preservation efficacy of the
`compositions, particularly when benzalkonium chloride
`and/or polymeric quaternary ammonium compound are
`employed as preservation agents. Thus, lower concentra-
`tions of y-cyclodextrin derivative and/or B-cyclodextrin
`derivative are typically preferred. Advantageously,
`it has
`also been found, however, that the ability of the y-cyclo-
`dextrin derivative and B-cyclodextrin derivatives in solubi-
`lizing olopatadine is very strong and relatively low concen-
`trations of y-cyclodextrin derivative and/or B-cyclodextrin
`derivative can solubilize significant concentrations of olo-
`patadine in aqueoussolution. As such, more desirable and
`reasonable concentrations of additional solubilizing agent
`can be used to aid in solubilizing the desired amounts of
`olopatadine.
`Further, it has been found that a composition formed using
`a combination of solubilizing agents such as