Office Action Predictor
Last updated: April 16, 2026
Application No. 18/436,706

BUSBAR ASSEMBLY FOR A PLURALITY OF INVERTERS

Non-Final OA §102§103
Filed
Feb 08, 2024
Examiner
ROSARIO BENITEZ, GUSTAVO A
Art Unit
2838
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Progress Rail Services Corporation
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
597 granted / 733 resolved
+13.4% vs TC avg
Strong +25% interview lift
Without
With
+25.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
39 currently pending
Career history
772
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
49.3%
+9.3% vs TC avg
§102
28.2%
-11.8% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 733 resolved cases

Office Action

§102 §103
DETAILED ACTION This office action is in response to the application filed on 02/08/2024. 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 02/08/2024 has been considered by the examiner. Specification The specification has not been checked to the extent necessary to determine the presence of all possible minor errors. Applicant’s cooperation is requested in correcting any errors of which applicant may become aware in the specification. Claim Objections Claims 4 and 17 are objected to because of the following informalities: Claims 4 and 17 line 4 “by current passing through” should be “by the current passing through”. Appropriate correction is required. Claim Rejections - 35 USC § 102 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. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1, 5-6, 14 and 18-19 is/are rejected under 35 U.S.C. 102(a)(2) as being unpatentable by Park US 2024/0008182. Regarding Claim 1, Park teaches (Figures 1 and 5-7) a busbar assembly for delivering current to a plurality of inverters (Modular power electronics converters, see fig. 5a and 5b), the busbar assembly comprising: a plurality of busbars (Dc+/-), configured to receive current from a current source (producing the DC signal) and to output current to the plurality of inverters (see fig. 5a); a plurality of spacers positioned between the plurality of busbars (spacers see fig. 5c); and a plurality of inverter connectors (at dc+1/DC-1), each inverter connector being coupled to one of the plurality of busbars (DC busbars), wherein each of the plurality of spacers and the plurality of inverter connectors is formed of a conductive material (par. 99 mentions that the spacers are conductive and for the connector see par. 107 and 143 ). (For example: Par. 107-110 and 119-223) Regarding Claim 5, Park teaches (Figures 1 and 5-7) wherein the plurality of busbars (DC busbars), the plurality of spacers (see fig. 5c), and each inverter connector (DC connector of Dc busbar) are brazed together to form the busbar assembly (see fig. 5b). (For example: Par. 44, 53, 68 and 119) Regarding Claims 6 and 19, Park teaches (Figures 1 and 5-7)wherein spacers (Fig.5c), of the plurality of spacers, have a same length, a same width, and a same height as each other (see fig. 5c, spacer area). (For example: Par. 107-110 and 119-223) Regarding Claim 14, Park teaches (Figures 1 and 5-7) a busbar and inverter assembly (Modular power electronics converter structure, see fig. 5a and 5b), comprising: a busbar assembly (see fig. 5c) comprising: a plurality of busbars (Dc busbar), configured to receive current from a current source (producing DC power ) and to output current (at AC terminals); a plurality of spacers (spacer at fig. 5c) positioned between the plurality of busbars (DC busbars); and a plurality of inverter connectors (DC busbar connector receiving the DC power), each inverter connector being coupled to one of the plurality of busbars (Fig. 5c), each of the plurality of spacers and the plurality of connectors being formed of a conductive material (par. 99 mentions that the spacers are conductive and for the connector see par. 107 and 143 ) ; and a plurality of inverters (see fig. 5a), arranged in parallel and directly connected to the plurality of inverter connectors and configured to receive the current output by the plurality of busbars (see fig. 5a-5b). (For example: Par. 107-110 and 119-223) Regarding Claim 18, Park teaches (Figures 1 and 5-7) wherein the plurality of busbars (DC busbars), the plurality of spacers (see fig. 5c), and each inverter connector (DC connector of Dc busbar) are brazed together to form the busbar assembly (see fig. 5b) that is connected to the plurality of inverters (see Fig. 5b). (For example: Par. 44, 53, 68 and 119) 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. Claim(s) 2-4 and 15-17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Park in view of Woody CN 101901638. Regarding Claims 2 and 15, Park teaches (Figures 1 and 5-7) the apparatus. Park does not teach wherein the plurality of busbars includes a first busbar, a second busbar, and a third busbar, and wherein a length of the third busbar is greater than a length of the second busbar, and the length of the second busbar is greater than a length of the first busbar. Woody teaches (Figure 2) wherein the plurality of busbars includes a first busbar, a second busbar, and a third busbar, (106-164) and wherein a length of the third busbar is greater than a length of the second busbar (164 and 162), and the length of the second busbar is greater than a length of the first busbar (162 and 160). (For example: Par. 56-61) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Park to include wherein the plurality of busbars includes a first busbar, a second busbar, and a third busbar, and wherein a length of the third busbar is greater than a length of the second busbar, and the length of the second busbar is greater than a length of the first busbar, as taught by Woody to reduce heat sink or cooling unit area, which results in additional components, cost is increased and additional space needed. Regarding Claims 3 and 16, Park teaches (Figures 1 and 5-7)wherein the plurality of spacers (see fig. 5c) includes a first layer of spacers (above 50 and 52), including two or more spacers (at least 2), between the first busbar and the second busbar (DC busbar between 50-52), and a second layer of spacers (above 52 and 54, see fig. 5c), including two or more spacers between the second busbar and the third busbar (busbars between 52-54, see fig. 5c). (For example: Par. 107-110 and 119-223) Regarding Claims 4 and 17, Park teaches (Figures 1 and 5-7) further comprising a plurality of openings (space between s1-s8 and spacers, see figure below) in between adjacent spacers of the plurality of spacers (spacers) and in between adjacent busbars of the plurality of busbars (DC busbar), the plurality of openings allowing for dissipation of heat generated by current passing through the busbar assembly (par. 105 and 110). (For example: Par. 107-110 and 119-223) PNG media_image1.png 368 480 media_image1.png Greyscale Claim(s) 7 and 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Park in view of Frank US 2024/0206103. Regarding Claims 7 and 20, Park teaches (Figures 1 and 5-7) wherein the conductive material for the conductors is copper. (For example: Par. 107-110 and 143) Park does not teach wherein the conductive material for the spacers is copper. Frank teaches (figures 1-5) wherein the conductive material for the spacers is copper. (Par. 29) It would have been obvious to one of ordinary skill in the art before the effective filling date of the claimed invention to modify the circuit of Park to include wherein the plurality of busbars includes a first busbar, a second busbar, and a third busbar, and wherein a length of the third busbar is greater than a length of the second busbar, and the length of the second busbar is greater than a length of the first busbar, as taught by Woody to reduce heat sink or cooling unit area, which results in additional components, cost is increased and additional space needed. Allowable Subject Matter Claims 8-13 are allowed. Reasons for Indicating Allowable Subject Matter The following is an examiner’s statement of reasons for indicating Allowable Subject Matter: Claim 8; prior art of record fails to disclose either by itself or in combination: “…a plurality of busbars (DC busbar in fig. 5c) including: a first busbar having a first length; a second busbar having a second length that is greater than the first length; and a third busbar having a third length that is greater than the second length; a plurality of spacers forming: a first spacer layer, including two or more spacers, of the plurality of spacers, positioned between the first busbar and the second busbar; and a second spacer layer, including a number of spacers that is greater than a number of spacers of the first spacer layer, of the plurality of spacers, positioned between the second busbar and the third busbar; and a plurality of inverter connectors, each inverter connector being coupled to one of the plurality of busbars, wherein each spacer of the first spacer layer and the second spacer layer and the plurality of connectors is formed of a conductive material.” These features taken alone or in combination are neither disclosed nor suggested by the prior art of record. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to GUSTAVO A ROSARIO-BENITEZ whose telephone number is (571)270-7888. The examiner can normally be reached M-F 9AM-5PM. 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, MONICA LEWIS can be reached at 5712721838. 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. /GUSTAVO A ROSARIO-BENITEZ/ Primary Examiner, Art Unit 2838
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Prosecution Timeline

Feb 08, 2024
Application Filed
Nov 21, 2025
Non-Final Rejection — §102, §103
Mar 26, 2026
Examiner Interview Summary
Mar 26, 2026
Applicant Interview (Telephonic)
Apr 02, 2026
Response Filed

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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
81%
Grant Probability
99%
With Interview (+25.3%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 733 resolved cases by this examiner. Grant probability derived from career allow rate.

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