Prosecution Insights
Last updated: October 01, 2026
Application No. 18/735,042

Filtering Spurious Signals in a Wireless Transceiver

Non-Final OA §103
Filed
Jun 05, 2024
Examiner
SHAH, TANMAY K
Art Unit
4100
Tech Center
4100
Assignee
Apple Inc.
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
920 granted / 1032 resolved
+29.1% vs TC avg
Moderate +9% lift
Without
With
+9.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
28 currently pending
Career history
1050
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
53.6%
+13.6% vs TC avg
§102
31.2%
-8.8% vs TC avg
§112
5.6%
-34.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1032 resolved cases

Office Action

§103
Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . 2. This communication is in response to the restriction requirement for the Application No. 18/735,042 filed on 6/18/26. Claims 1 – 20 has been examined. Claim Rejections - 35 USC § 103 3. In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 4. 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. 5. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 6. Claim(s) 1 – 3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Lestoquoy (CA 302765) in further view of Mao et al. (US 2021/0135647, Mao teaches). Regarding claim 1, Lestoquoy teaches Wireless circuitry comprising (FIG. 2 is a schematic of a circuit implementation of a wireless energy transfer system with inductors with flux cancellation): a transformer having a primary coil and a secondary coil (primary coil, 222 Fig. 2 and secondary coil, 210 of Fig. 2); a first series inductor coupled to a first terminal of the primary coil (L3da, Fig. 2; connected In series); a second series inductor coupled to a second terminal of the primary coil (L3db, Fig. 2; connected In series); and a filter (rectifier, 208 of Fig. 2). However does not specifically disclose a filter having inductor inductively coupled to the first and second series inductors and operable to produce a first filter response when the wireless circuitry is configured to operate in a first mode and a second filter response when the wireless circuitry is configured to operate in a second mode different than the first mode. In the same field of endeavor, Mao teaches a filter having inductor inductively coupled to the first and second series inductors and operable to produce a first filter response when the wireless circuitry is configured to operate in a first mode and a second filter response when the wireless circuitry is configured to operate in a second mode different than the first mode (In an example, the circuit 302 may comprise a first inductor 312, a second inductor 314, a first switch 316, a first capacitor 318, a second capacitor 320, a third capacitor 322, and a second switch 324. A first terminal of the inductor 312 may be connected to a first terminal of the differential input/output port of the circuit 302. A first terminal of the inductor 314 may be connected to a second terminal of the differential input/output port of the circuit 302. The switch 316 may be connected between a second terminal of the inductor 312 and a second terminal of the inductor 314. A first terminal of the capacitor 318 may be connected to the first terminal of the differential input/output port of the circuit 302. A first terminal of the capacitor 320 may be connected to the second terminal of the differential input/output port of the circuit 302. A second terminal of the capacitor 318 may be connected to a first terminal of the capacitor 322 and a first terminal of the differential output/input port of the circuit 302. A second terminal of the capacitor 320 may be connected to a second terminal of the differential output/input port of the circuit 302. The switch 324 may be connected between the second terminal of the capacitor 320 and a second terminal of the capacitor 322. A first output/input of the circuit 304 may be connected to a first terminal of the capacitor 306 and the single ended output/input of the circuit 300. The switch 308 may be connected between a second terminal of the capacitor 306 and a second terminal of the output/input of the circuit 304. The second terminal of the output/input of the circuit 304 may be connected via the capacitor 310 to a circuit ground potential, paragraph 38; The switches 308, 316, and 324 may be implemented using a variety of switch types including, but not limited to, CMOS, FET, and HEMT technologies. In various embodiment, the switch 316 may be in a conducting state (e.g., ON) when the balun is configured to transform a differential port (e.g., INP/INN side) impedance of 100 Ohms to a single-ended port (e.g., OUT side) impedance of 50 Ohms and in a non-conducting state (e.g., OFF) when the balun is configured to transform a differential port (e.g., INP/INN side) impedance of 50 Ohms to a single-ended port (e.g., OUT side) impedance of 50 Ohms. A state (e.g. conducting or non-conducting) of the switches 308 and 324 may be determined based upon a level of return loss (matching) desired for a particular frequency band, paragraph 42). It would have been obvious to one of the ordinary skilled in the art at the time of the filing to combine the teachings of Mao’s different mode with the system of Lestoquoy. One would be motivated to combine these teachings because in doing so it can select different mode based on the frequency response needed. Regarding claim 2, Lestoquoy with Mao teaches claim 1 The wireless circuitry of claim 1, Mao further comprising: a switch (316, fig. 4) coupled across the filter inductor (312 or 314 connected to switch 316), wherein the switch is deactivated in the first mode and is activated in the second mode, wherein the first mode exhibits a first passband at a first frequency, and wherein the second mode exhibits a second passband at a second frequency greater than the first frequency (The switches 308, 316, and 324 may be implemented using a variety of switch types including, but not limited to, CMOS, FET, and HEMT technologies. In various embodiment, the switch 316 may be in a conducting state (e.g., ON) when the balun is configured to transform a differential port (e.g., INP/INN side) impedance of 100 Ohms to a single-ended port (e.g., OUT side) impedance of 50 Ohms and in a non-conducting state (e.g., OFF) when the balun is configured to transform a differential port (e.g., INP/INN side) impedance of 50 Ohms to a single-ended port (e.g., OUT side) impedance of 50 Ohms. A state (e.g. conducting or non-conducting) of the switches 308 and 324 may be determined based upon a level of return loss (matching) desired for a particular frequency band, paragraph 42). Regarding claim 3, Lestoquoy with Mao teaches The wireless circuitry of claim 1, Mao further teaches wherein the filter inductor comprises multiple turns and has a first distal terminal and a second distal terminal disconnected from the first distal terminal (it has multiple turns as shown in Fig. 4; it has two terminal and it can connect and disconnect via switch 316). Allowable Subject Matter 7. Claims 4 – 20 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 8. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TANMAY K SHAH whose telephone number is (571)270-3624. The examiner can normally be reached Mon - Fri - 8:00 - 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, Chieh Fan can be reached at 571-272-3042. 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. TANMAY K. SHAH Primary Examiner Art Unit 2632 /TANMAY K SHAH/Primary Examiner, Art Unit 2632
Read full office action

Prosecution Timeline

Jun 05, 2024
Application Filed
Aug 31, 2026
Non-Final Rejection mailed — §103 (current)

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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
89%
Grant Probability
98%
With Interview (+9.2%)
2y 4m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1032 resolved cases by this examiner. Grant probability derived from career allowance rate.

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