Prosecution Insights
Last updated: October 01, 2026
Application No. 19/048,332

METHOD AND APPARATUS FOR ENGINE HOT SECTION MAINTENANCE

Non-Final OA §112
Filed
Feb 07, 2025
Examiner
MARSH, STEVEN M
Art Unit
3632
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Pratt & Whitney Canada Corp.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
6m
Est. Remaining
87%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
1266 granted / 1593 resolved
+27.5% vs TC avg
Moderate +8% lift
Without
With
+7.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
31 currently pending
Career history
1616
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
36.1%
-3.9% vs TC avg
§102
34.6%
-5.4% vs TC avg
§112
28.1%
-11.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1593 resolved cases

Office Action

§112
DETAILED ACTION This is the first office action for US Application 19/048,332 for a Method and Apparatus for Engine Hot Section Maintenance. 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 Objections Claims 15 and 16 are objected to because of the following informalities: Line 3 of claim 15, the word “a” should be deleted and replaced with - - an - -. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 4 and 14 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claims 4 and 14 recite the limitation "the mobile support" in line 1. There is insufficient antecedent basis for this limitation in the claim. Allowable Subject Matter Claims 1-3, 5-13 and 17-20 are allowed. Claims 4 and 14 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action and to include all of the limitations of the base claim and any intervening claims. Claims 15 and 16 would be allowable pending correction of the objection noted above. The following is an examiner’s statement of reasons for allowance: The prior art of record discloses maintenance systems for aircraft engines, but does not disclose or suggest the specific features of a static member removably securable to a first case of the engine, slidably engaged with a mobile member that is removably securable to a second case of the engine, in a direction parallel to a central axis of the aircraft engine, a brace fixture secured to the static member and a shaft supporting rod removably securable to the brace fixture, and an intermediate support removably secured to the static member. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 2022/0048647 to Henriksen US 2021/0324764 to Muller US 2026/0035104 to Fujita US 5271218 to Taylor US 12703510 to Binette US 9885286 to Murphy US 10221724 to Murphy US 11247787 to Henderson US 2023/0111699 to Henriksen The above prior art discloses various engine support apparatuses. Any inquiry concerning this communication or earlier communications from the examiner should be directed to STEVEN M MARSH whose telephone number is (571)272-6819. The examiner can normally be reached Mon-Thurs 9 am-7:30 pm. 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, Terrell McKinnon can be reached at 571-272-4797. 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. STEVEN M. MARSH Primary Examiner Art Unit 3632 /STEVEN M MARSH/Primary Examiner, Art Unit 3632
Read full office action

Prosecution Timeline

Feb 07, 2025
Application Filed
Aug 26, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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3y 6m to grant Granted Sep 22, 2026
Patent 12734715
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3y 5m to grant Granted Sep 15, 2026
Patent 12738722
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2y 6m to grant Granted Sep 15, 2026
Patent 12721437
LOAD DISPERSING FURNITURE SUPPORT FOR TURF APPLICATIONS
2y 10m to grant Granted Sep 01, 2026
Patent 12723704
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2y 0m to grant Granted Sep 01, 2026
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
80%
Grant Probability
87%
With Interview (+7.9%)
2y 2m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1593 resolved cases by this examiner. Grant probability derived from career allowance rate.

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