Prosecution Insights
Last updated: May 29, 2026
Application No. 18/951,451

MULTIPLEXER WITH FILTER INCLUDING DIFFERENT TYPES OF ACOUSTIC WAVE RESONATORS

Non-Final OA §DOUBLEPATENT§DP
Filed
Nov 18, 2024
Priority
Mar 12, 2021 — provisional 63/160,316 +3 more
Examiner
GLENN, KIMBERLY E
Art Unit
2843
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Skyworks Solutions Inc.
OA Round
1 (Non-Final)
90%
Grant Probability
Favorable
1-2
OA Rounds
9m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allowance Rate
956 granted / 1065 resolved
+21.8% vs TC avg
Moderate +6% lift
Without
With
+6.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
20 currently pending
Career history
1097
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
35.2%
-4.8% vs TC avg
§102
36.3%
-3.7% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1065 resolved cases

Office Action

§DOUBLEPATENT §DP
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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 2/6/2025 was filed. The submission is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 2, 8, 9, 10, 12 and 13 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1, 3, 5, 8, 9, 11 and 13 of U.S. Patent No. 12, 176, 882. Although the claims at issue are not identical, they are not patentably distinct from each other because: 18/951451 12/176882 2. A multiplexer with acoustic wave resonators, the multiplexer comprising: a first filter including a first plurality of bulk acoustic wave resonators and a shunt surface acoustic wave resonator; and a transmit filter coupled to the first filter, the transmit filter including a second plurality of bulk acoustic wave resonators, the transmit filter being a band pass filter having a transmit passband, and the shunt surface acoustic wave resonator having a resonant frequency that is within the transmit passband. 1. A multiplexer with acoustic wave resonators, the multiplexer comprising: a first filter configured to filter a radio frequency signal, the first filter having a first passband, and the first filter including a plurality of bulk acoustic wave resonators and a shunt surface acoustic wave resonator; and a second filter coupled to the first filter at a common node, the second filter having a second passband that is below the first passband, and the shunt surface acoustic wave resonator having a resonant frequency that is in the second passband. 3. The multiplexer of claim 2 wherein the second filter is a transmit filter. 8. The multiplexer of claim 2 wherein the shunt surface acoustic wave resonator is a temperature compensated surface acoustic wave resonator. 8. The multiplexer of claim 1 wherein the shunt surface acoustic wave resonator is a temperature compensated surface acoustic wave resonator. 9. The multiplexer of claim 2 wherein the shunt surface acoustic wave resonator is a multilayer piezoelectric substrate surface acoustic wave resonator. 9. The multiplexer of claim 1 wherein the shunt surface acoustic wave resonator is a multilayer piezoelectric substrate surface acoustic wave resonator. 10. The multiplexer of claim 2 wherein the first filter includes a series surface acoustic wave resonator. 11. The multiplexer of claim 1 wherein the first filter includes a series surface acoustic wave resonator and all of the plurality of bulk acoustic wave resonators are coupled to the common node by way of the series surface acoustic wave resonator. 12. The multiplexer of claim 2 wherein the shunt surface acoustic wave resonator is an only surface acoustic wave resonator of the first filter. 5. The multiplexer of claim 1 wherein the shunt surface acoustic wave resonator is an only surface acoustic wave resonator of the first filter. 13. The multiplexer of claim 2 further comprising a third filter coupled to the first filter and the transmit filter at a common node. 13. The multiplexer of claim 1 further comprising a third filter coupled to the common node. Allowable Subject Matter Claims 14-21 are allowed. Claims 3-7 and 11 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Taguchi US patent 11,545,961 titled “Multiplexer and communication apparatus”. Nishihara US Patent Application Publication 2013/0127565 titled “Duplexer” . Nakagawa US Patent 11,764,880 titled “ Acoustic wave device , multiplexer , high frequency front end circuit and communication device”. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KIMBERLY E GLENN whose telephone number is (571)272-1761. The examiner can normally be reached M-F 8:00 AM-5:00 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, Andrea Lindgren Baltzell can be reached at 571-272-5918. 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. April 14, 2026 /K.E.G/Examiner, Art Unit 2843 /ANDREA LINDGREN BALTZELL/Supervisory Patent Examiner, Art Unit 2843
Read full office action

Prosecution Timeline

Nov 18, 2024
Application Filed
Apr 28, 2026
Non-Final Rejection mailed — §DOUBLEPATENT, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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MULTI-FREQUENCY CAPACITANCE CANCELLATION IN AN ACOUSTIC FILTER CIRCUIT
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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
90%
Grant Probability
96%
With Interview (+6.5%)
2y 3m (~9m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1065 resolved cases by this examiner. Grant probability derived from career allowance rate.

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