Prosecution Insights
Last updated: April 19, 2026
Application No. 18/885,882

TWO-STAGE POWER SUPPLY ARCHITECTURE WITH FLYBACK/LLC AND BUCK CONVERTER FOR LED DISPLAY

Non-Final OA §DP
Filed
Sep 16, 2024
Examiner
LE, TUNG X
Art Unit
2844
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Texas Instruments Incorporated
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
92%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allow Rate
1435 granted / 1651 resolved
+18.9% vs TC avg
Minimal +5% lift
Without
With
+5.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
20 currently pending
Career history
1671
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
37.9%
-2.1% vs TC avg
§102
37.0%
-3.0% vs TC avg
§112
11.4%
-28.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1651 resolved cases

Office Action

§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 . This Office Action is in response to the Applicant’s communication filed on September 16, 2024. In virtue of this communication, claims 1-16 are currently presented in the instant application. Information Disclosure Statement The information disclosure statement (IDS) submitted on 09/16/2024 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 1, 3-8 and 10-16 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1, 4-6, 8, 10, 12-13, 16-17 and 19 of U.S. Patent No. 12,120,790. Although the claims at issue are not identical, they are not patentably distinct from each other because the above indicated claims of the instant application are either anticipated by, or would have been obvious over, the above identified claims of the above patent, including: As claim 1: A circuit, comprising: a single-output voltage converter having a converter output and first and second converter inputs, wherein the first converter input is coupled to a power supply input, and the second converter input is coupled to a ground terminal; a buck regulator having first and second buck inputs and a buck output, wherein the first buck input is coupled to the converter output, and the second buck input is coupled to the second converter input; first and second LED input terminals, wherein the first LED input terminal is coupled to the converter output, and the second LED input terminal is coupled to the buck output; and third and fourth LED input terminals, wherein the third LED input terminal is coupled to the converter output, and the fourth LED input terminal is coupled to the second converter input and the ground terminal (see claim 12 of the above patent). As claim 3: The circuit of claim 1, wherein the buck regulator is configured to provide a first voltage to the second LED input terminal, and the single-output voltage converter is configured to provide a second voltage to the third LED input terminal (see claims 4 and 12 of the above patent). As claim 4: The circuit of claim 3, wherein the second voltage is greater than the first voltage (see claim 5 of the above patent). As claim 5: The circuit of claim 1, wherein the buck regulator is configured to sink current from the second LED input terminal (see claim 16 of the above patent). As claim 6: The circuit of claim 1, wherein the buck regulator is a synchronous buck regulator (see claim 19 of the above patent). As claim 7: The circuit of claim 1, wherein the power supply input is configured to receive an alternating current (AC) signal (see claims 1, 8 or 12 of the above patent). As claim 8: A system, comprising: a single-output voltage converter having a converter output and first and second converter inputs, wherein the first converter input is configurable to receive an alternating current (AC) power signal, and the second converter input is coupled to a ground terminal; a buck regulator having first and second buck inputs and a buck output, wherein the first buck input is coupled to the converter output, and the second buck input is coupled to the second converter input and the ground terminal; first and second LED input terminals, wherein the first LED input terminal is coupled to the buck output, and the second LED input terminal is coupled to the ground terminal; and third and fourth LED input terminals, wherein the third LED input terminal is coupled to the converter output, and the fourth LED input terminal is coupled to the second converter input and the ground terminal (see claim 12 of the above patent). As claim 10: The system of claim 8, wherein the buck regulator is configured to source current to the first LED input terminal (see claim 10 of the above patent). As claim 11: The system of claim 8, wherein the buck regulator is a synchronous buck regulator (see claim 19 of the above patent). As claim 12: A circuit, comprising: a single-output voltage converter having a converter output and first and second converter inputs, wherein the second converter input is coupled to a ground terminal, and the single-output voltage converter is configured to provide a first voltage at the converter output; a buck regulator having first and second buck inputs and a buck output, wherein the first buck input is coupled to the converter output, the second buck input is coupled to the second converter input, and the buck regulator is configured to provide a second voltage at the buck output; first and second load terminals, wherein the first load terminal is coupled to the converter output, and the second load terminal is coupled to the second buck input and the ground terminal; and third and fourth load terminals, wherein the third load terminal is coupled to the converter output, and the fourth load terminal is coupled to the buck output (see claim 12 of the above patent). As claim 13: The circuit of claim 12, wherein the first load terminal is coupled to the third load terminal (see claim 13 of the above patent). As claim 14: The circuit of claim 12, wherein the buck regulator is configured to sink current from the third load terminal (see claims 6 and 16 of the above patent). As claim 15: The circuit of claim 12, wherein the buck regulator is configured to source current to the third load terminal (see claims 10 and 17 of the above patent). As claim 16: The circuit of claim 12, wherein the buck regulator is a synchronous buck regulator (see claim 19 of the above patent). Allowable Subject Matter Claims 2 and 9 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. The following is a statement of reasons for the indication of allowable subject matter: Prior art of record fails to disclose or fairly suggest the following limitations: A circuit, comprising … “further comprising fifth and sixth LED input terminals, wherein the fifth LED input terminal is coupled to the converter output, and the sixth LED input terminal is coupled to the second converter input and the ground terminal”, as claimed in dependent claims 2 and 9. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Prior art Yang et al. – US 7,675,240 Prior art Maisel et al. – US 6,265,832 Prior art Chen et al. – US 2010/0148679 Any inquiry concerning this communication or earlier communications from the examiner should be directed to TUNG X LE whose telephone number is (571)272-6010. The examiner can normally be reached Monday to Friday from 10am to 6pm. 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, Regis Betsch can be reached at 571-270-7101. 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. /TUNG X LE/Primary Examiner, Art Unit 2844 December 9, 2025
Read full office action

Prosecution Timeline

Sep 16, 2024
Application Filed
Dec 15, 2025
Non-Final Rejection — §DP (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
87%
Grant Probability
92%
With Interview (+5.0%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 1651 resolved cases by this examiner. Grant probability derived from career allow rate.

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