Prosecution Insights
Last updated: October 25, 2026
Application No. 19/033,667

SYSTEM AND METHOD FOR ASSEMBLING A FAN CASE OF A GAS TURBINE ENGINE

Non-Final OA §102
Filed
Jan 22, 2025
Priority
Feb 07, 2024 — GB 2401612.3
Examiner
RIVERA, JOSHEL
Art Unit
1746
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Rolls-Royce plc
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
9m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
641 granted / 870 resolved
+8.7% vs TC avg
Moderate +7% lift
Without
With
+6.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
23 currently pending
Career history
899
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
48.1%
+8.1% vs TC avg
§102
26.8%
-13.2% vs TC avg
§112
16.3%
-23.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 870 resolved cases

Office Action

§102
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. Claim(s) 1 - 13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Molnar et al (US 2016/0146050). With regards to claim 1, Molnar teaches a system for assembling a fan case of a gas turbine engine (Abstract), the system comprising: At least one adhesive layer disposed on an inner surface of a fan case barrel of the fan case, where the at least one adhesive layer includes an inwardly-facing surface that is radially spaced apart from the inner surface of the fan case barrel (Figure 2 item 34) At least one liner disposed on the inwardly-facing surface of the at least one adhesive layer (Figure 2 item 32) An annular structure adapted to be disposed on an outer surface of the fan case barrel (Figure 2 item 54) A heat source coupled to the annular structure, where ethe heat source is adapted to heat the annular structure to at least a predetermined curing temperature, such that the annular structure inductively heats the at least one adhesive layer, and where, upon being inductively heated by the annular structure, the at least one adhesive layer is cured, thereby adhesively bonding the at least one liner to the inner surface of the fan case barrel (Figure 2 item 52, paragraph 43) A controller that is communicably coupled to the heat source, where the controller is configured to control the heat source to heat the annular structure to at least the predetermined curing temperature (paragraph 39 discloses choosing a temperature which would require a controller) At least one temperature sensor that is disposed proximal to the inner surface of the fan case barrel to measure a temperature proximal to the inner surface of the fan case barrel, where the at least one temperature sensor is communicably coupled to the controller, and where the controller is configured to control the heat source, so that the temperature proximal to the inner surface of the dan case barrel is equal to at least the predetermined curing temperature (paragraph 39 discloses choosing a temperature which would require a controller and a sensor) With regards to claim 2, the teachings of Molnar are presented above. Additionally, Molnar teaches that the system further comprises an insulation layer covering each of the at least one liner and the at least one adhesive layer (Figure 2 item 40). With regards to claim 3, the teachings of Molnar are presented above. Additionally, Molnar teaches that the at least one adhesive layer includes a plurality of adhesive layers that are circumferentially spaced apart from each other, where at least one liner includes a plurality of liners corresponding to the plurality of adhesive layers, where the plurality of liners corresponding to the plurality of liners are circumferentially spaced apart from each other, where each of the plurality of liners is disposed on the inwardly-facing surface of corresponding adhesive layer from the plurality of adhesive layers, and where each of the plurality of liners is adhesively bonded to the inner surface of the fan case barrel by the corresponding adhesive layer (paragraph 31). With regards to claim 4, the teachings of Molnar are presented above. Additionally, Molnar teaches that the annular structure includes a composite material or a metallic material (paragraph 51). With regards to claim 5, the teachings of Molnar are presented above. Additionally, Molnar teaches that the heat source is at least partially embedded within the annular structure (paragraph 43). With regards to claim 6, the teachings of Molnar are presented above. Additionally, Molnar teaches that the heat source includes an electric cartridge, a heated fabric, a heated film, a ceramic heater, an induction heater or a heated fluid (paragraph 43). With regards to claims 7 and 8, the teachings of Molnar are presented above. Additionally, Molnar teaches that the at least one liner is made of a metal, a composite material or a combination thereof, where the metal of the at least one liner is titanium, aluminum or a combination thereof (paragraphs 34 – 37). With regards to claim 9, the teachings of Molnar are presented above. Additionally, Molnar teaches that the at least one adhesive layer includes a structural adhesive film (paragraph 38). With regards to claim 10, Molnar teaches a method for assembling a fan case of a gas turbine engine (Abstract), the method comprising the steps of: Disposing an annular structure on an outer surface of a fan case barrel of the fan case (Figure 2 item 54) Coupling a heat source to the annular structure (paragraph 43) Disposing at least one adhesive layer on an inner surface of the fan case barrel (paragraph 38) Disposing at least one liner on an inwardly-facing surface of the at least one adhesive layer, where the inwardly facing surface of the at least one adhesive layer is radially spaced apart from the inner surface of the fan case barrel (Figure 2 item 32) Heating, via the heat source, the annular structure to at least a predetermined curing temperature, such that the annular structure inductively heats the at least one adhesive layer (paragraph 43) Controlling, via a controller that is communicably coupled to the heat source, the heat source to heat the annular structure to at least the predetermined curing temperature (paragraph 39 discloses choosing a temperature which would require a controller) Measuring, via at least one temperature sensor disposed proximal to the inner surface of the fan case barrel, a temperature proximal to the inner surface of the fan case barrel, where the at least one temperature sensor is communicably coupled to the controller (paragraph 39) Controlling via the controller, the heat source, so that the temperature proximal to the inner surface of the fan case barrel is equal to at least the predetermined curing temperature (paragraph 39) Curing the at least one adhesive layer due to the inductive heating of the at least one adhesive layer by the annular structure (paragraph 39) Adhesively bonding the at least one liner to the inner surface of the fan case barrel upon curing of the at least one adhesive layer (paragraph 37). With regards to claim 11, the teachings of Molnar are presented above. Additionally, Molnar teaches that the method comprises disposing an insulation layer covering each of the at least one liner and the at least one adhesive layer (Figure 2 item 40). With regards to claim 12, the teachings of Molnar are presented above. Additionally, Molnar teaches that the at least one adhesive layer includes a plurality of adhesive layers that are circumferentially spaced apart from each other, where the at least one liner includes a plurality of liners corresponding to the plurality of adhesive layers, where the plurality of liners are circumferentially spaced apart from each other, and where the step of disposing the at least one liner on the inwardly-facing surface of the at least one adhesive layer further includes disposing each of the plurality of liners on the inwardly-facing surface of a corresponding adhesive layer from the plurality of adhesive layers (paragraph 38). With regards to claim 13, the teachings of Molnar are presented above. Additionally, Molnar teaches that the step of adhesively bonding the at least one liner to the inner surface of the fan case barrel further includes adhesively bonding each of the plurality of liners to the inner surface of the fan case barrel by the corresponding adhesive layer (paragraph 38). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOSHEL RIVERA whose telephone number is (571)270-7655. The examiner can normally be reached M-F 12pm - 8pm. 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, Michael Orlando can be reached at (571) 270-5038. 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. /JOSHEL RIVERA/Examiner, Art Unit 1746 /MICHAEL N ORLANDO/Supervisory Patent Examiner, Art Unit 1746
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Prosecution Timeline

Jan 22, 2025
Application Filed
Oct 13, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 2m to grant Granted Oct 13, 2026
Patent 12759280
LAMINATION METHOD AND LAMINATION DEVICE PERFORMING THE SAME
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Patent 12753334
TEMPORARY ADHESIVE MATERIAL FOR SUBSTRATE PROCESSING AND METHOD FOR MANUFACTURING LAMINATE
4y 9m to grant Granted Oct 06, 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
74%
Grant Probability
80%
With Interview (+6.7%)
2y 6m (~9m remaining)
Median Time to Grant
Low
PTA Risk
Based on 870 resolved cases by this examiner. Grant probability derived from career allowance rate.

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