Prosecution Insights
Last updated: April 19, 2026
Application No. 18/113,228

ACOUSTIC WAVE DEVICE

Non-Final OA §112
Filed
Feb 23, 2023
Examiner
ROSENAU, DEREK JOHN
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Murata Manufacturing Co. Ltd.
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
3y 1m
To Grant
86%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allow Rate
951 granted / 1229 resolved
+9.4% vs TC avg
Moderate +8% lift
Without
With
+8.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
34 currently pending
Career history
1263
Total Applications
across all art units

Statute-Specific Performance

§103
50.8%
+10.8% vs TC avg
§102
29.3%
-10.7% vs TC avg
§112
17.1%
-22.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1229 resolved cases

Office Action

§112
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 § 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 3 and 4 recite the limitations "the second piezoelectric film" and “the first piezoelectric film”. There is insufficient antecedent basis for these limitations in the claims. These claims are dependent on claim 1, and the first and second piezoelectric films are recited in claim 2. Claims 14 and 15 recite the limitations "the second region" and “the first region”. There is insufficient antecedent basis for these limitations in the claim. These claims are dependent on claim 2, and the first and second piezoelectric regions are recited in claim 1. Allowable Subject Matter Claims 1, 2, 5-13, and 16-20 are allowed. The following is an examiner’s statement of reasons for allowance. The prior art does not disclose or suggest “the piezoelectric film includes a first region and a second region in a thickness direction of the piezoelectric film; and when a density in the first region is a first density and a density in the second region is a second density, the first density and the second density are different from each other” in combination with the remaining elements of claim 1. The prior art does not disclose or suggest “the piezoelectric film includes a first piezoelectric film and a second piezoelectric film stacked directly or indirectly on the first piezoelectric film; the first piezoelectric film and the second piezoelectric film are made of piezoelectric materials of a same system; and when a density of the first piezoelectric film is a first density and a density of the second piezoelectric film is a second density, the first density and the second density are different from each other” in combination with the remaining elements of claim 2. 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. Taguchi et al. (US 5998907) discloses an acoustic wave device having a support substrate, piezoelectric film, and IDT electrode, wherein the piezoelectric film is made up of two layers of piezoelectric material, but does not disclose that these two layers have different densities. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Derek John Rosenau whose telephone number is (571)272-8932. The examiner can normally be reached Monday-Thursday 7 am to 5:30 pm Central Time. 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) 270-7938. 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. /DEREK J ROSENAU/Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Feb 23, 2023
Application Filed
Feb 06, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603629
COMPOSITE STRUCTURE AND ASSOCIATED PRODUCTION METHOD
2y 5m to grant Granted Apr 14, 2026
Patent 12597906
DOPED CRYSTALLINE PIEZOELECTRIC RESONATOR FILMS AND METHODS OF FORMING DOPED SINGLE CRYSTALLINE PIEZOELECTRIC RESONATOR LAYERS ON SUBSTRATES VIA EPITAXY
2y 5m to grant Granted Apr 07, 2026
Patent 12593611
RESERVOIR ELEMENT AND NEUROMORPHIC DEVICE
2y 5m to grant Granted Mar 31, 2026
Patent 12592676
RESONATOR
2y 5m to grant Granted Mar 31, 2026
Patent 12587162
ACOUSTIC WAVE DEVICE
2y 5m to grant Granted Mar 24, 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
77%
Grant Probability
86%
With Interview (+8.2%)
3y 1m
Median Time to Grant
Low
PTA Risk
Based on 1229 resolved cases by this examiner. Grant probability derived from career allow rate.

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