Prosecution Insights
Last updated: July 17, 2026
Application No. 18/328,264

AUTOMATED SCREENING FOR DIABETIC RETINOPATHY SEVERITY USING COLOR FUNDUS IMAGE DATA

Non-Final OA §102
Filed
Jun 02, 2023
Priority
Dec 04, 2020 — provisional 63/121,711 +2 more
Examiner
ROGERS, SCOTT A
Art Unit
2683
Tech Center
2600 — Communications
Assignee
Hoffmann-La Roche Inc.
OA Round
2 (Non-Final)
92%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 92% — above average
92%
Career Allowance Rate
587 granted / 638 resolved
+30.0% vs TC avg
Minimal +1% lift
Without
With
+1.1%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
28 currently pending
Career history
655
Total Applications
across all art units

Statute-Specific Performance

§101
12.2%
-27.8% vs TC avg
§103
44.3%
+4.3% vs TC avg
§102
10.8%
-29.2% vs TC avg
§112
14.7%
-25.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 638 resolved cases

Office Action

§102
DETAILED ACTION 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 . Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1, 7, 8, 14, and 15 are rejected under 35 U.S.C. 102(a)(1) / 102(a)(2) as being anticipated by Peng et al (US 20200250821 A1). Referring to claims 1 and 7: Peng et al disclose a method for evaluating diabetic retinopathy (DR) severity, the method comprising: receiving input data comprising at least color fundus imaging data for an eye of a subject (par. 85: a fundus picture of a to-be-predicted patient of a severity degree or range of the DR disease (normal, mild non-proliferative, moderate non-proliferative, severe non-proliferative, or proliferative) according to a classification result; and par. 120: color picture obtained by photographing); performing at least one image standardization procedure on the color fundus imaging data (par. 34-35, 42-46: using a first neural network model being obtained by training a parameter in a second neural network model by using a first training set and a second training set, returning a first recognition result indicating the pathological feature recognized from the target picture, a color fundus image); generating a set of standardized image data (corresponds to the training pictures); and generating, using at least the standardized image data, a metric indicating a probability that a score for DR severity in the eye of the subject falls within a selected range using a neural network (par. 83-89: using the training pictures and the DR classification model (second neural network model), the probability is determined of the current fundus image corresponding to a DR severity falling in a selected range, referred to above). Referring to claims 8 and 14: Peng et al disclose (par. 9-10, 47, 117, 165-166, 179) a system for evaluating diabetic retinopathy (DR) severity, the system comprising a non-transitory memory and one or more processors coupled to the non-transitory memory and configured to read instructions from the non-transitory memory to cause the system to perform the method steps (operations) set forth in claim 1 and 7, and are therefore rejected for the same reasons a indicated above. Referring to claim 15: Peng et al disclose (par. 9, 117, 165-166, 179) a non-transitory, machine-readable medium having stored thereon machine-readable instructions executable to cause a system to perform the method steps (operations) set forth in claim 1, and is therefore rejected for the same reasons a indicated above. Allowable Subject Matter Claims 2-6, 9-13, and 16-20 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Referring to these claims, the prior art searched and of record neither anticipates nor suggests the limitations added in the claimed combinations. Information Disclosure Statement The information disclosure statement (IDS) submitted on 26 May 2026 was filed in compliance with the provisions of 37 CFR 1.97 and 1.98. Accordingly, the IDS has been considered by the examiner. The relevance of the cited documents, in addition to any applied above, can be found in the Office Action mailed 24 May 2025 in Chinese patent application no. 2021-80081631.9 (of record) and the Office Action mailed 02 September 2025 in Japanese patent application no. 2023-533637 (of record). Cited Art The prior art and other references made of record and not relied upon are considered pertinent to applicant's disclosure. Shang et al (US 20210192728) corresponds to CN 111754486 A applied in the Office Action mailed 24 May 2025 in Chinese patent application no. 2021-80081631.9 (of record). Any inquiry concerning this communication or earlier communications from the examiner should be directed to Scott Rogers whose telephone number is 571-272-7467. The examiner can normally be reached 8 am to 7 pm flex. 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, Abderrahim Merouan can be reached on 571-270-5254. 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. /Scott A Rogers/ Primary Examiner, Art Unit 2683 13 June 2026
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Prosecution Timeline

Jun 02, 2023
Application Filed
Aug 08, 2025
Non-Final Rejection mailed — §102
Nov 07, 2025
Response Filed
Apr 28, 2026
Request for Continued Examination
May 08, 2026
Response after Non-Final Action
May 26, 2026
Request for Continued Examination
May 29, 2026
Response after Non-Final Action
Jun 17, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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

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Prosecution Projections

2-3
Expected OA Rounds
92%
Grant Probability
93%
With Interview (+1.1%)
2y 1m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 638 resolved cases by this examiner. Grant probability derived from career allowance rate.

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