Prosecution Insights
Last updated: July 17, 2026
Application No. 18/604,926

PHARMACEUTICAL COMPOSITIONS COMPRISING APRACLONIDINE FOR OCULAR REDNESS RELIEF

Non-Final OA §103
Filed
Mar 14, 2024
Priority
Mar 18, 2023 — provisional 63/491,051
Examiner
CHANDRAKUMAR, NIZAL S
Art Unit
1625
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Alcon Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
1284 granted / 1768 resolved
+12.6% vs TC avg
Strong +18% interview lift
Without
With
+18.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
89 currently pending
Career history
1858
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
33.5%
-6.5% vs TC avg
§102
6.6%
-33.4% vs TC avg
§112
37.9%
-2.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1768 resolved cases

Office Action

§103
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Election/Restrictions PNG media_image1.png 22 400 media_image1.png Greyscale Upon further considerations all pending claims 1-6 and 17-19 are examined together. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 1-6 and 17-19 is/are rejected under 35 U.S.C. 103 as being unpatentable over Horn WO2011075617 (herein after D1) further in view of US4470965, US9937230 and US11052094. D1 discloses in claim 1 a composition comprising a selective a-2 adrenergic receptor agonist for use in increasing whiteness of an eye. According to claim 3, said selective a-2 adrenergic receptor agonist is selected from a group comprising inter alia apraclonidine. According to claim 4 of D1, said a-2 adrenergic receptor agonist is present at a concentration from between about 0.001 % to about 0.05% weight by volume. However, D1 does neither disclose compositions comprising apraclonidine, nor in amounts of greater than 0.05% (w/v) to no more than 0.2% (w/v) or comprising a polymer. The difference is the presence of a polymer and the concentration of apraclonidine of 0.05-0.2% (w/v). Document D1 provides compositions and methods for achieving cosmetic eye whitening which utilize low concentrations of selective a-2 adrenergic receptor agonists. Document D1 discloses in preferred embodiments compositions with concentrations of the selective a-2 adrenergic receptor agonists from about 0.0001 % to about 0.05%; more preferably, from about 0.001 % to about 0.025%; even more preferably, from about 0.01 % to about 0.025%; and even more preferably, from about 0.01 % to about 0.02% weight by volume of the composition, wherein the selective a-2 adrenergic receptor agonist is selected from the group consisting inter alia of apraclonidine, mivazerol, clonidine or brimonidine (see D1, page 3, first three paragraphs). Further D1 prefers brimonidine over apraclonidine and does not report experimental data for apraclonidine. As taught in Fig 12 of D1, brimonidine with similar biochemical properties is useful for reducing redness in the eye. The limitations of depend claims are drawn to polymers, viscosity, buffer, citric acid or citrate, tonicity, osmolarity, chloride, benzalkonium and at different values/concentrations. Compositions to ophthalmic formulations with these parameters are well-known in the art. The following are a sample of many relevant prior art relevant. US4470965 section under claims teaches PNG media_image2.png 374 520 media_image2.png Greyscale PNG media_image3.png 252 812 media_image3.png Greyscale PNG media_image4.png 138 826 media_image4.png Greyscale Similarly, US9937230 section under claims: PNG media_image5.png 188 824 media_image5.png Greyscale PNG media_image6.png 138 816 media_image6.png Greyscale Similarly, US11052094 section under claims: PNG media_image7.png 360 820 media_image7.png Greyscale PNG media_image8.png 132 814 media_image8.png Greyscale The active agent apraclonidine in D1 (and in US11052094, topical) and other inactive ingredients such as polymer at various concentrations are known in the art for making ophthalmic compositions. The issue therefore is the different concentrations of the active and inactive agents. It has been held that where the general conditions of a claim are disclosed in the prior art, discovering the optimum or workable ranges involves only routine skill in the art. The differences in concentration or temperature will not support the patentability of subject matter encompassed by the prior art unless there is evidence indicating such concentration or temperature is critical. “[W]here the general conditions of a claim are disclosed in the prior art, it is not inventive to discover the optimum or workable ranges by routine experimentation.” In re Aller, 220 F.2d 454, 456, 105 USPQ 233, 235 (CCPA 1955). Again, the invention is a selective combination of the inventions by the prior arts done in a manner obvious to one of ordinary skill in the art. Patent for the combination of known elements wherein their functions remain the same withdraws “what is already known into field of its monopoly and diminishes resources available to skilled men”. Sakraida v. Ag Pro, Inc.189 USPQ 449, 425 US 273, (1976). Accordingly, the claims do not recite an unobvious distinction over the prior art. Further, a reference is relevant not only for what it expressly teaches, but also for what it would have conveyed to one of ordinary skill in the art. See In re Opprecht, 12 USPQ2d 1235, 1236 (Fed. Cir. 1989); In re Bode, 193 USPQ 12 (CCPA 1976). In light of the foregoing discussion, the Examiner finds that the claimed subject matter as a whole would have been obvious to one of ordinary skill in the art at the time the invention was made, in view of the cited references and the knowledge generally available in the art. Accordingly, the claims are rejected under 35 U.S.C. § 103. The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US Patent Nos. 9259425 11833245 11596600 8445526 Any inquiry concerning this communication or earlier communications from the examiner should be directed to NIZAL S CHANDRAKUMAR whose telephone number is (571)272-6202. The examiner can normally be reached M-F 8-5 EST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Andrew Kosar can be reached at (571) 272-0913. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /NIZAL S CHANDRAKUMAR/Primary Examiner, Art Unit 1625
Read full office action

Prosecution Timeline

Mar 14, 2024
Application Filed
Jun 04, 2026
Non-Final Rejection mailed — §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
73%
Grant Probability
91%
With Interview (+18.3%)
2y 3m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1768 resolved cases by this examiner. Grant probability derived from career allowance rate.

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