Prosecution Insights
Last updated: April 19, 2026
Application No. 18/526,154

RISLEY PRISM OPTICAL POINTING CONTROLLER

Non-Final OA §101§102
Filed
Dec 01, 2023
Examiner
NGUYEN, DUNG T
Art Unit
2871
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
BAE Systems PLC
OA Round
1 (Non-Final)
82%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
83%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allow Rate
1297 granted / 1577 resolved
+14.2% vs TC avg
Minimal +1% lift
Without
With
+0.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
39 currently pending
Career history
1616
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
41.4%
+1.4% vs TC avg
§102
35.2%
-4.8% vs TC avg
§112
12.7%
-27.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1577 resolved cases

Office Action

§101 §102
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Information Disclosure Statement The information disclosure statement (IDS) submitted on 01/04/2024 was filed and considered by the examiner. Specification The lengthy specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant’s cooperation is requested in correcting any errors of which applicant may become aware in the specification. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 1-9 are rejected under 35 U.S.C. 102(a)(1)/102(a)(2) as being anticipated by Sanghera et al., US 2010/0271719 A1. Claim 1 is anticipated by Sanghera et al. figures 1-5 and accompanying text which discloses a Risley prism assembly (RPA) 2 comprising: . a first prism element 10 . a second prism element 20 . each of the first and second prism elements 10, 20 having an angular orientation about a common central rotation axis that is variable by causing respective first and second Risley prism assembly motors (RPA motors)(rotors 33, 37) to rotate the first and second prism elements about the central rotation axis 6 . wherein light entering the RPA along the central rotation axis and passing through both of the first and second prism elements 10, 20 is refracted away from the central rotation axis 6 at a maximum refraction angle γmax when an angular orientation difference Δθ between the angular orientation θ1 of the first prism element 10 and the angular orientation θ2 of the second prism element 20 is zero (fig. 3) and at a minimum refraction angle γmin when Δθ = 1800 (fig. 4) . a controller 30 It is noted that the functional of the controller (e.g., apply an iterative root finding method of false position (MFP), direct the first and second RPA motors to adjust the angular orientations of the first and second prism elements) recites a one-step process which does not further limit the structure of the device claims. Therefore, this limitation has not been given patentable weight. Re claim 2, wherein γmin = 0 (fig. 4). Re claims 3-6 and 8-9, those claims recite the one-step process limitation(s) of the controller functional that does not further limit the structure of the device claims and those limitation(s) have not been given patentable weight. Re claim 7, wherein the RPA is achromatic ([0022]). Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 10-17 are rejected under 35 U.S.C. 101 because the claimed invention is directed to non-statutory subject matter. The claim(s) does/do not fall within at least one of the four categories of patent eligible subject matter Claims 10 recites a computer program product embodied on a non-transitory computer readable storage medium, the computer program product comprising instructions configured for processing scanning instructions for an optical assembly which is not a process, machine, manufacture, or composition of matter (four statutory categories). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DUNG T NGUYEN whose telephone number is (571)272-2297. The examiner can normally be reached 8:00 - 5:00. 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, Jennifer Carruth can be reached at 571-272-9791. 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. /DUNG T NGUYEN/Primary Examiner, Art Unit 2871
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Prosecution Timeline

Dec 01, 2023
Application Filed
Feb 21, 2026
Non-Final Rejection — §101, §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

1-2
Expected OA Rounds
82%
Grant Probability
83%
With Interview (+0.9%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1577 resolved cases by this examiner. Grant probability derived from career allow rate.

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