Prosecution Insights
Last updated: April 19, 2026
Application No. 18/742,140

ACOUSTIC ATTENUATION PANEL COMPRISING AN INDUCTION-BASED FROST TREATMENT SYSTEM, AIR INTAKE OF AN AIRCRAFT NACELLE AND AIRCRAFT COMPRISING SUCH A PANEL

Non-Final OA §103
Filed
Jun 13, 2024
Examiner
PHILLIPS, FORREST M
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Airbus Operations SAS
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
2y 4m
To Grant
98%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
1441 granted / 1730 resolved
+15.3% vs TC avg
Moderate +14% lift
Without
With
+14.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
36 currently pending
Career history
1766
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
74.1%
+34.1% vs TC avg
§102
16.1%
-23.9% vs TC avg
§112
2.6%
-37.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1730 resolved cases

Office Action

§103
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 § 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. 1.Claims 1-7 are rejected under 35 U.S.C. 103 as being unpatentable over Porte (US8448901) in view of Hull (US20170361938). With respect to claim 1 Porte discloses an acoustic attenuation panel comprising: A first face configured to be in contact with an air stream in which at least one acoustic wave is propagated in operation (see figure 1 and column 1 lines 30-50), A second face opposite the first face, At least one frost treatment system (see again column 1 lines 30-50), and From the first face to the second face an acoustically resistive structure of which one surface forms the first face, at least one cellular structure and a reflective layer of which one surface forms the second face. Porte does not disclose wherein the at least one frost treatment system comprises at least one first induction based frost treatment system and a least one second frost treatment system of mechanical type configured to generate mechanical vibrations, the first induction based frost treatment system comprising at least eon electromagnetic field generator positioned at the second face of the acoustic attenuation panel and several electrically conductive elements incorporated in the acoustically resistive structure in a form of strips of electrically conductive material spaced apart from one another and configured to generate a heating through induction phenomenon, the at least one second frost treatment system of mechanical type comprising at least one vibration source inserted between two strips of electrically conductive material of the first induction based frost treatment. Hull discloses a frost treatment system that comprises at least one first induction based frost treatment system (see figure 1 induction coil 130) and at least one second frost treatment system based on mechanical type configured to generate mechanical vibrations (see 110 in figure 1 element 184 which provides force also abstract acoustic pressure is applied to a surface), the first induction based frost treatment system comprises at least one electromagnetic field generator positioned at a second face of the acoustic attenuation panel and several electrically conductive strips of electrically conductive material spaced apart from oner another and configured to generate a heating through induction phenomenon (see figures 4 and 5), the at least one second frost treatment system of mechanical type comprising at least one vibration source inserted between two strips of electrically conductive material of the first induction based frost treatment (see figures 6 and 7). It would have been an obvious matter to one of ordinary skill in the art before the time of the effective filing to combine the teachings of Hull to use such anti ice features with the device of Porte. The motivation for doing so would be that the system would heat up quickly without the wait for hot air to be created through combustion. With respect to claim 2 Porte as modified by Hull further discloses wherein the at least one frost treatment system comprises several electromagnetic field generators distributed on the second face of the acoustic panel (see 144 in figures 6 and 7). With respect to claim 3 Porte as modifieds by Hull further discloses wherein each electromagnetic field generator is fixed against the reflective layer (see again fig 6 and 7). With respect to claim 4 Porte as modified further discloses wherein each electromagnetic field generator is an electric coil see figure 1). With respect to claim 5 as it regards the orientation of the strips such would have been an obvious choice for one of ordinary skill in the art. Such would be only a rearrangement of the parts as would have been easily understood. Further it has been held that rearranging parts of an invention involves only routine skill in the art. In re Japikse, 86 USPQ 70. With respect to claim 6 Porte as modified (see abstract of Porte) further discloses an air intake of an aircraft nacelle comprising: the acoustic attenuation panel of claim 1. With respect to claim 7 Porte as modified (abstract) further discloses an aircraft including the acoustic attenuation panel according to claim 1. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Porte (US20200070949) discloses a sound absorbing panel for aircraft; Porte (US20130098471) discloses an aircraft nacelle; Safai (US20110049300) discloses an ice protection system using induction and WO2008059169 discloses an aircraft leading edge. Any inquiry concerning this communication or earlier communications from the examiner should be directed to FORREST M PHILLIPS whose telephone number is (571)272-9020. The examiner can normally be reached Monday-Friday from 9:00-5:00. 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, Dedei Hammond can be reached at (571) 272-3985. 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. /FORREST M PHILLIPS/Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Jun 13, 2024
Application Filed
Feb 27, 2026
Non-Final Rejection — §103 (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
83%
Grant Probability
98%
With Interview (+14.2%)
2y 4m
Median Time to Grant
Low
PTA Risk
Based on 1730 resolved cases by this examiner. Grant probability derived from career allow rate.

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