Prosecution Insights
Last updated: April 19, 2026
Application No. 17/818,022

USB PORT CONTROLLER AND ELECTRONIC APPARATUS

Non-Final OA §103
Filed
Aug 08, 2022
Examiner
NGO, BRIAN
Art Unit
2851
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Rohm Co. Ltd.
OA Round
3 (Non-Final)
88%
Grant Probability
Favorable
3-4
OA Rounds
2y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allow Rate
851 granted / 967 resolved
+20.0% vs TC avg
Moderate +12% lift
Without
With
+12.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
24 currently pending
Career history
991
Total Applications
across all art units

Statute-Specific Performance

§101
14.2%
-25.8% vs TC avg
§103
36.9%
-3.1% vs TC avg
§102
38.3%
-1.7% vs TC avg
§112
7.0%
-33.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 967 resolved cases

Office Action

§103
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 . DETAILED ACTION This Non-Final office is a response to the papers filed on 01/30/2026. Claims 1-10 are pending. Response to Arguments Applicant's arguments file on 01/30/2026 have been considered but are moot in view of the new ground(s) of rejection. 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. Claims 1-3, 5-7, and 9-10 are rejected under 35 U.S.C. 103 as being unpatentable over Park et al, (Pub. No. 20200313446 A1) further in view of Wang (CN 110690816 A). Regarding claims 1 and 7, Park discloses: A universal serial bus port controller on a power receiving device side (see Fig. 3, 4A-4B, 5-8, see par [0065-0066], The charging interface 110 may transfer a power supplied through a cable to the power supply circuit 130. The charging interface 110 may include a USB interface or a micro USB interface….), a power receiving device equipped with the universal serial bus port controller, the power receiving device including a power supply terminal side (see Fig. 3, 4A-4B, 5-8, power supply terminal 110); a capacitor connected to the power supply terminal (see Fig. 3, 4A-4B, 5-8, capacitor C1, C2 or C3), and a discharge unit connected between the power supply terminal and a ground line (see Fig. 3, 4A-4B, 5-8, discharge resistance R2 and discharge switch 137), the universal serial bus port controller comprising: a discharge control unit configured to turn on the unit to discharge a voltage of the power supply terminal (see Par [0085-0090], In the case where a charging power is not supplied from the charging interface 110 or in the case where the charging adapter 50 or a wireless charger is separated from the charging interface 110, the PMIC 132 may control the fourth switch L2, the second switch H2, and the connection control switch 137 to be in a turn-on state such that the power….). However, Park fails to disclose: the universal serial bus port controller being compatible with a universal serial bus Type-C, a discharge control unit configured to turn on the unit to discharge a voltage of the power supply terminal until the voltage reaches below a predetermined voltage, and turn off the discharge unit after the voltage of the power supply terminal has been discharged to the predetermined voltage. Thus, Wang discloses: the universal serial bus port controller being compatible with a universal serial bus Type-C (see Fig. 1, USB type-C), a discharge control unit configured to turn on the unit to discharge a voltage of the power supply terminal until the voltage reaches below a predetermined voltage, and turn off the discharge unit after the voltage of the power supply terminal has been discharged to the predetermined voltage (see page 6-7, terminal switch TSW is turned on to enter the discharge period in the configuration detection period. the terminal switch TSW is opened (during discharge), control component D is cut off and the voltage of the CC pin P is pulled to the low potential under the reference voltage Vref1 of the terminal resistor TR….., see page 9-10). It would have been obvious to one of ordinary skill in the art at the time the invention was made to have modified a portable electronic device of Park to utilize a USB type-C in order to monitor the configuration channel of the voltage level (see Wang page 2). Regarding claim 2. Park discloses: wherein the discharge switch is included in the universal serial bus port controller (see par [0085-0090], the PMIC 132 may control the fourth switch L2, the second switch H2, and the connection control switch 137 to be in a turn-on state such that the power of the batteries 121 and 122 is supplied to the load 150….). Regarding claim 3. Park discloses: wherein the discharge resistance is included in the universal serial bus port controller (see par [0085-0090], the PMIC 132 may control the fourth switch L2, the second switch H2, and the connection control switch 137 to be in a turn-on state such that the power of the batteries 121 and 122 is supplied to the load 150….). Regarding claim 5. Park discloses: wherein the universal serial bus port controller is integrated on one semiconductor substrate (see par [0051-0054], A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions….). Regarding claim 6. Park discloses: An electronic apparatus comprising: the universal serial bus port controller according to claim 1 (see Fig. 3, 4A-4B, 5-8). Regarding claim 9, Park discloses: wherein the discharge unit comprises a discharge resistance and a discharge switch connected in series (see Fig. 3, 4A-4B, 5-8, discharge resistance R2 and discharge switch 137). Regarding claim 10, Park discloses: A universal serial bus port controller on a power receiving device side (see Fig. 3, 4A-4B, 5-8, see par [0065-0066], The charging interface 110 may transfer a power supplied through a cable to the power supply circuit 130. The charging interface 110 may include a USB interface or a micro USB interface….), the universal serial bus port controller comprising: a first terminal configured to output a control signal to control an ON state and an OFF state of an input switch connected between a power supply terminal and an internal circuit included in a power receiving device (see Fig. 3, 4A-4B, 5-8, power supply terminal 110, terminal 132a); a discharge unit connected between the power supply terminal and a ground line (see Fig. 3, 4A-4B, 5-8, discharge resistance R2 and discharge switch 137); a second terminal connected between the power supply terminal and the discharge unit (see Fig. 3, 4A-4B, 5-8, terminal 132d); and a discharge control unit configured to turn on the discharge unit to discharge a voltage of the power supply terminal (see Par [0085-0090], In the case where a charging power is not supplied from the charging interface 110 or in the case where the charging adapter 50 or a wireless charger is separated from the charging interface 110, the PMIC 132 may control the fourth switch L2, the second switch H2, and the connection control switch 137 to be in a turn-on state such that the power….). However, Park fails to disclose: the universal serial bus port controller being compatible with a universal serial bus Type-C, a discharge control unit configured to turn on the unit to discharge a voltage of the power supply terminal until the voltage reaches below a predetermined voltage, and turn off the discharge unit after the voltage of the power supply terminal has been discharged to the predetermined voltage. Thus, Wang discloses: the universal serial bus port controller being compatible with a universal serial bus Type-C (see Fig. 1, USB type-C), a discharge control unit configured to turn on the unit to discharge a voltage of the power supply terminal until the voltage reaches below a predetermined voltage, and turn off the discharge unit after the voltage of the power supply terminal has been discharged to the predetermined voltage (see page 6-7, terminal switch TSW is turned on to enter the discharge period in the configuration detection period. the terminal switch TSW is opened (during discharge), control component D is cut off and the voltage of the CC pin P is pulled to the low potential under the reference voltage Vref1 of the terminal resistor TR….., see page 9-10). It would have been obvious to one of ordinary skill in the art at the time the invention was made to have modified a portable electronic device of Park to utilize a USB type-C in order to monitor the configuration channel of the voltage level (see Wang page 2). 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. Claims 4 and 8 are rejected under 35 U.S.C. 103 as being unpatentable over Park et al, (Pub. No. 20200313446 A1) and Koga et al. (Pub. No. 20180019585 A1) further in view of Alperin et al. (Pub. No. 2004/0205363 A1). Regarding claims 4 and 8. Park discloses: A discharge unit includes a discharge switch (see Fig. 3, 4A-4B, 5-8, discharge resistance R2 and discharge switch 137) the discharge control unit applies an off-level driving voltage to a control terminal of the discharge switch when a voltage is supplied from the feeding device to the power supply terminal (see Par [0085-0090], In the case where a charging power is not supplied from the charging interface 110 or in the case where the charging adapter 50 or a wireless charger is separated from the charging interface 110, the PMIC 132 may control the fourth switch L2, the second switch H2, and the connection control switch 137 to be in a turn-on state such that the power….). However, Park fails to disclose: wherein the discharge switch is a depletion transistor. Thus, Alperin discloses: wherein the discharge switch is a depletion transistor (See Fig. 2, see par [0025], The discharge switch may be comprised of a relay contact, a silicon-controller rectifier (SCR), a bipolar transistor, a junction field effect transistor, a power metal-oxide semiconductor field effect transistor MOSFET, either enhancement or depletion mode....). It would have been obvious to one of ordinary skill in the art at the time the invention utilize discharge switch is a depletion transistor because it is well known in the art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRIAN NGO whose telephone number is (571)270-7011. The examiner can normally be reached M-F 7AM-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, Jack Chiang can be reached at 5712727483. 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. /BRIAN NGO/ Primary Examiner, Art Unit 2851
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Prosecution Timeline

Aug 08, 2022
Application Filed
Apr 29, 2025
Non-Final Rejection — §103
Aug 01, 2025
Response Filed
Oct 31, 2025
Final Rejection — §103
Jan 30, 2026
Request for Continued Examination
Feb 09, 2026
Response after Non-Final Action
Feb 21, 2026
Non-Final Rejection — §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

3-4
Expected OA Rounds
88%
Grant Probability
99%
With Interview (+12.2%)
2y 4m
Median Time to Grant
High
PTA Risk
Based on 967 resolved cases by this examiner. Grant probability derived from career allow rate.

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