Prosecution Insights
Last updated: August 17, 2026
Application No. 18/597,180

WIRELESS POWER TRANSMISSION BETWEEN A POWER TRANSMITTER AND AN APPLIANCE

Final Rejection §103
Filed
Mar 06, 2024
Priority
Mar 10, 2023 — EU 23305323.0
Examiner
HSIEH, PING Y
Art Unit
2664
Tech Center
2600 — Communications
Assignee
STMicroelectronics N.V.
OA Round
2 (Final)
79%
Grant Probability
Favorable
3-4
OA Rounds
3m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
759 granted / 960 resolved
+17.1% vs TC avg
Strong +16% interview lift
Without
With
+15.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
44 currently pending
Career history
992
Total Applications
across all art units

Statute-Specific Performance

§101
7.0%
-33.0% vs TC avg
§103
58.4%
+18.4% vs TC avg
§102
20.1%
-19.9% vs TC avg
§112
1.5%
-38.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 960 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. 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. Claim(s) 1, 6, 13-16, 20 and 21 is/are rejected under 35 U.S.C. 103 as being unpatentable over Park (U.S. PG-PUB NO. 2022/0394825) in view of Schaefer (U.S. PATENT NO. 9226098) and further in view of Li (U.S. PG-PUB NO. 2014/0361735). -Regarding claim 1, Park discloses a wireless power receiving appliance configured to wirelessly receive power from a wireless power transmitter, the wireless power receiving appliance (FIG. 3) comprising: a near field communications (NFC) device configured to be electromagnetically coupled to another NFC device of the wireless power transmitter (wireless power transfer (WPT) cooktop device 200 may transmit wireless power to the small electric appliance 100, [0052]). Park is silent to teaching that a field strength indicator configured to: receive, from a plurality of NFC antennas of the NFC device, representative signals signal of a strength of the NFC field between the NFC device and said another NFC device. However, the claimed limitation is well known in the art as evidenced by Schaefer. In the same field of endeavor, Park teaches a field strength indicator configured to: receive, from a plurality of NFC antennas of the NFC device, representative signals signal of a strength of the NFC field between the NFC device and said another NFC device (communicating apparatus 110 comprises: a plurality of coils 10, a multiplexer 20, a processor 40 and at least one adaptation network 30, [col. 4, lines 37-44]; determining the configuration of coils having the best coupling effect is to evaluate a radio frequency field strength induced by the coupling of each of the coils 10 and the antenna 51, [col. 5 lines 49-67]). Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of Park with the teaching of Schaefer in order to ensuring that the communication is stable regardless of the location of the antenna of a portable device. The combination is silent to teaching that compare values of the representative signals with at least one reference value; and emit a user signal depending on the comparison between the values of the representative signals and the at least one reference value; wherein said user signal displays an indication of a change in positioning of the wireless power receiving appliance to wirelessly receive power from the wireless power transmitter. However, the claimed limitation is well known in the art as evidenced by Li. In the same field of endeavor, Li teaches compare values of the representative signals with at least one reference value (indicator may be used to determine whether the device 105 is at an optimal device position by comparing the indicator with a predefined signal strength, [0061]); and emit a user signal depending on the comparison between the values of the representative signals and the at least one reference value (LED (Light Emitting Diode) on the device 105 may be used to indicate the position status, [0066]); wherein said user signal displays an indication of a change in positioning of the wireless power receiving appliance to wirelessly receive power from the wireless power transmitter (arrow indicating the direction to move the device 105 relative to the charger 110, [0066]). Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of the combination with the teaching of Li in order to determine whether the device position is at an optimal position, and provide feedback indicative of the device position. -Regarding claim 6, the combination further discloses the field strength indicator comprises: at least a comparator configured to compare the value of the representative signal with the at least one reference value (Li, comparing the indicator with a predefined signal strength, [0061]); and a signal emitter unit coupled to the at least one comparator and configured to emit the user signal when the value of the representative signal is greater than, or equal to, the at least one reference value (Li, if the field strength indicator meets or exceeds a predefined strength, the device may be determined to be in an optimal position at least because it has detected a strong signal strength, [0064]). -Regarding claim 13, the combination further discloses the signal emitter unit comprises one signal emitter coupled to the at least one comparator (comparing the indicator with a predefined signal strength, [0061]). -Regarding claim 14, the combination further discloses the one signal emitter comprises a light source, and the user signal is a light signal having a signal characteristic which depends on the comparison between the value of the representative signal and the at least one reference value (Li, [0066]). -Regarding claim 15, the combination further discloses the at least one NFC antenna of the NFC device is configured to be electromagnetically coupled to another NFC antenna of said another NFC device (Li, [0020]). -Regarding claim 16, the combination further discloses a power receiver circuit configured to receive power from a power transmitter circuit of the wireless power transmitter (Li, [0028]). -Regarding claim 20, Park discloses a method for wirelessly power transmission between a wireless power transmitter and a wireless power receiving appliance (FIG. 3), said wireless power receiving appliance comprising an NFC device configured to be electromagnetically coupled to another NFC device of the wireless power transmitter (wireless power transfer (WPT) cooktop device 200 may transmit wireless power to the small electric appliance 100, [0052]). Park is silent to teaching that receiving, from a plurality of NFC antennas of the NFC device, representative signals of the strength of the NFC field between the NFC device and said another NFC device. However, the claimed limitation is well known in the art as evidenced by Schaefer. In the same field of endeavor, Park teaches receiving, from a plurality of NFC antennas of the NFC device, representative signals of the strength of the NFC field between the NFC device and said another NFC device (communicating apparatus 110 comprises: a plurality of coils 10, a multiplexer 20, a processor 40 and at least one adaptation network 30, [col. 4, lines 37-44]; determining the configuration of coils having the best coupling effect is to evaluate a radio frequency field strength induced by the coupling of each of the coils 10 and the antenna 51, [col. 5 lines 49-67]). Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of Park with the teaching of Schaefer in order to ensuring that the communication is stable regardless of the location of the antenna of a portable device. The combination is silent to teaching that comparing values of the representative signals with at least one reference value; and emitting a user signal depending on the comparison between the values of the representative signals and the at least one reference value; wherein the user signal displays an indication of a change in positioning the wireless power receiving appliance with respect to the wireless power transmitter to wirelessly receive power. However, the claimed limitation is well known in the art as evidenced by Li. In the same field of endeavor, Li teaches comparing values of the representative signals with at least one reference value (indicator may be used to determine whether the device 105 is at an optimal device position by comparing the indicator with a predefined signal strength, [0061]); and emitting a user signal depending on the comparison between the values of the representative signals and the at least one reference value (LED (Light Emitting Diode) on the device 105 may be used to indicate the position status, [0066]); wherein the user signal displays an indication of a change in positioning the wireless power receiving appliance with respect to the wireless power transmitter to wirelessly receive power (arrow indicating the direction to move the device 105 relative to the charger 110, [0066]). Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of the combination with the teaching of Li in order to determine whether the device position is at an optimal position, and provide feedback indicative of the device position. -Regarding claim 21, the combination further discloses moving the wireless power receiving appliance in a first direction; determining if the value of the representative signal increases or decreases during, or after, the moving; and: when the value increases, then continuing moving said wireless power receiving appliance in the first direction until the representative signal stops increasing or reaches a threshold value; or when the value decreases, then moving said wireless power receiving appliance in a second direction different than, for example opposite or perpendicular to, the first direction; and repeating the determining step until the representative signal stops increasing or is above a threshold value (Li, Upon detecting a field strength and subsequently the position of the device relative to the charging system 110, the system may provide feedback to the user of the device 105 via a feedback mechanism on either one or both of the device 105 and charging system 110. This feedback may aid the user in finding the optimal device position. It may also inform the user once the optimal position has been achieved, as well as when authentication has been achieved. In one example, the feedback mechanism may be the device interface. Such feedback may include a graphical and/or pictorial indication of the intensity or strength of the field, such as a growing circle, a power bar, signal level digits (e.g., 0-100%), arrow indicating the direction to move the device 105 relative to the charger 110, etc. For cases where the device 105 is in standby mode or is off (e.g., the battery is depleted), an LED (Light Emitting Diode) on the device 105 may be used to indicate the position status. For example, a power LED indicator or another "NFC" LED indicator may be used. As the user moves the handset through the electromagnetic field, the LED may change intensity, colors, and/or blink rate to indicate the "hot" or "cold" spot of the field. Similarly, the device 105 may emit sound whose volume and/or frequency reflects such alignment. Additionally or alternatively, the charging system 110 may also include an indicator mechanism such as a display or LED to communicate the device position to the user. By communicating the status of the position of the device 105, a user may easily achieve an optimal position and thus benefit from NFC and wireless charging technologies, [0066]). Claim(s) 2-4, 17, 18 is/are rejected under 35 U.S.C. 103 as being unpatentable over Park (U.S. PG-PUB NO. 2022/0394825) in view of Schaefer (U.S. PATENT NO. 9226098), Li (U.S. PG-PUB NO. 2014/0361735) and further in view of Kim (U.S. PG-PUB NO. 2022/0140661). -Regarding claim 2, the combination is silent to teaching that the representative signal received by the field strength indicator is a DC signal, the NFC device comprising a converter circuit coupled to the at least one NFC antenna and to the field strength indicator, the converter circuit being configured to convert an AC signal received from the at least one NFC antenna into the DC signal. However, the claimed limitation is well known in the art as evidenced by Kim. In the same field of endeavor, Kim teaches the representative signal received by the field strength indicator is a DC signal, the NFC device comprising a converter circuit coupled to the at least one NFC antenna and to the field strength indicator, the converter circuit being configured to convert an AC signal received from the at least one NFC antenna into the DC signal (power converter 240, FIG. 4). Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of Li with the teaching of Kim in order to improve the efficiency of wireless power transmission. -Regarding claim 3, the combination further discloses the NFC device comprises an NFC harvester including the converter circuit, and a matching network coupled to the at least one NFC antenna and to the NFC harvester, the AC signal being transmitted by the matching network to the converter circuit, the NFC harvester and the matching network being included in a matching network and harvester unit (Kim, electric devices 201 and 202 may further include an impedance matching circuit to improve the efficiency of power transmission between the receiving coil 220 and the power converter 240, [0095]). -Regarding claim 4, the combination further discloses each NFC antenna is coupled to the converter circuit through a multiplexer (Schaefer, multiplexer 20 to enable the coils 4 and 6 and disenable coils 1, 2, 3, 5 and 7, [col. 6 lines 12-28]). -Regarding claim 17, the combination further discloses the wireless power receiving appliance is a kitchen appliance (Kim, [0055]). -Regarding claim 18, although the combination does not disclose the kitchen appliance is configured to receive power from the wireless power transmitter according to the Ki Cordless Kitchen standard, Ki Cordless Kitchen standard is well known standard in the art. Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of the combination with the Ki Cordless Kitchen standard in order to provide efficient power transfer. Claim(s) 7-12 is/are rejected under 35 U.S.C. 103 as being unpatentable over Park (U.S. PG-PUB NO. 2022/0394825) in view of Schaefer (U.S. PATENT NO. 9226098), Li (U.S. PG-PUB NO. 2014/0361735) and further in view of Yan (U.S. PATENT NO. 11182770). -Regarding claim 7, Li is silent to teaching that the at least one comparator comprises a plurality of comparators, and the at least one reference value comprises different reference values, each comparator being configured to compare the value of the representative signal with one reference value of the different reference values; wherein the user signal emitted by the signal emitter unit depends on the comparison between the value of the representative signal and the reference value of each comparator. However, the claimed limitation is well known in the art as evidenced by Yan. In the same field of endeavor, Yan teaches the at least one comparator comprises a plurality of comparators, and the at least one reference value comprises different reference values, each comparator being configured to compare the value of the representative signal with one reference value of the different reference values; wherein the user signal emitted by the signal emitter unit depends on the comparison between the value of the representative signal and the reference value of each comparator (look up table, col. 11 line 57-col. 12 line 21). Therefore, it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention to combine the teaching of Li with the teaching of Yan in order to enhance the efficiency. -Regarding claims 8 and 9, although the combination does not disclose the different reference values are ordered in increasing or decreasing values between a low reference value and a high reference value, the order of values is merely design preference and it would have been obvious to one of ordinary skills in the art before the effective filing date of the claimed invention. -Regarding claim 10, the combination further discloses the signal emitter unit comprises a plurality of signal emitters, each comparator being coupled to a dedicated signal emitter (Li, [0082]). -Regarding claim 11, the combination further discloses some of the signal emitters are configured to indicate a direction of moving of the wireless power receiving appliance in order to improve the position of the wireless power receiving appliance with respect to the wireless power transmitter (Li, directional indicator, [0067]). -Regarding claim 12, the combination further discloses the NFC antennas are each coupled to a dedicated signal emitter among the signal emitters configured to indicate the direction, the dedicated signal emitters being configured to indicate a direction of moving of the wireless power receiving appliance towards one of the NFC antennas or between two adjacent NFC antennas (Li, directional indicator, [0067]; Yan, [col. 7 line 45-col. 8 line 4]). Response to Arguments Applicant’s arguments with respect to claim(s) 1-4, 6-18, 20 and 21 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PING Y HSIEH whose telephone number is (571)270-3011. The examiner can normally be reached Monday-Friday, 9am-4pm. 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, Jennifer Mehmood can be reached at (571) 272-2976. 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. /PING Y HSIEH/Primary Examiner, Art Unit 2664
Read full office action

Prosecution Timeline

Mar 06, 2024
Application Filed
Mar 17, 2026
Non-Final Rejection mailed — §103
Jun 09, 2026
Response Filed
Aug 04, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12700838
RADIO FREQUENCY CIRCUIT AND COMMUNICATION DEVICE
2y 5m to grant Granted Aug 04, 2026
Patent 12689121
ANTENNA DEVICE
2y 6m to grant Granted Jul 21, 2026
Patent 12683590
TUNING DEVICE, SYSTEM AND METHOD
2y 8m to grant Granted Jul 14, 2026
Patent 12671473
METHODS, DEVICES, AND SYSTEMS FOR BLIND ADAPTIVE BEAMFORMING OF NARROWBAND SIGNALS WITH AN UNCALIBRATED ANTENNA ARRAY USING MACHINE LEARNING
2y 10m to grant Granted Jun 30, 2026
Patent 12665682
CALIBRATION OF NON-CO-LOCATED POLARIZED ANTENNA ARRAYS
2y 12m to grant Granted Jun 23, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
79%
Grant Probability
95%
With Interview (+15.5%)
2y 9m (~3m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 960 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month