Prosecution Insights
Last updated: April 19, 2026
Application No. 18/591,608

Expandable Panelboard Bus Assemblies and Methods of Assembling Same

Non-Final OA §103
Filed
Feb 29, 2024
Examiner
PATEL, MUKUNDBHAI G
Art Unit
2835
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
ABB Schweiz AG
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
582 granted / 780 resolved
+6.6% vs TC avg
Strong +31% interview lift
Without
With
+30.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
19 currently pending
Career history
799
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
53.4%
+13.4% vs TC avg
§102
37.2%
-2.8% vs TC avg
§112
6.7%
-33.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 780 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 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 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) 1-5 and 7 are rejected under 35 U.S.C. 103 as being unpatentable over Steven Wayne DOZIER (DOZIER) US 2023/0127383 A1. As per claim 1 DOZIER disclose; An expandable electrical panelboard system (Fig. 1 item 100), comprising: a panelboard bus assembly (line bus 104 and 104’ and 110), the panelboard bus assembly comprising: a bus subassembly (104 and 104’) comprising: one or more busbar insulators (details of well-known insulators item 159 as shown in fig. 5 to prevent short circuit between bus bars od item 104 is not shown in drawing); and one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) at least partially enclosed in the one or more busbar insulators (well-known details not shown); and an expansion subassembly (fig. 3, 5 item 110) comprising: one or more expansion busbars (Fig. 5 item 126a and 126b), wherein the one or more expansion busbars are electrically conductive and at least partially exposed (Fig. 3), wherein the bus subassembly is configured to mechanically and electrically couple with another bus subassembly (fig. 1 item 104 and 104’) via the expansion subassembly (item 110). DOZIER disclose a bus subassembly (104 and 104’) comprising: one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) and further shows in fig. 7 (reproduced below) a “GAP” between line bus item 104 for inserting contacts of bridge assembly. PNG media_image1.png 587 562 media_image1.png Greyscale But do not show a well-known details one or more busbar insulators (details of well-known insulators item 159 as shown in fig. 5 to prevent short circuit between bus bars od item 104 is not shown in drawing); and one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) at least partially enclosed in the one or more busbar insulators (well-known details not shown)at least partially enclosed in the one or more busbar insulators. However in Fig. 5 DOZIER disclose well-known in the art arrangement of, placing insulators (134, 154, 159 and 160) between bus bars (126a and 126b) to create a GAP between busbars. Thus, it would have been recognized by one of ordinary skill in the art that applying the known technique taught by DOZIER fig. 5 to the device of DOZIER fig. 7 and 1 would have yielded predicable results and resulted in an improved assembly, that would allows for electrical isolation between busbars and to create a gap between busbars. As per claim 2 DOZIER disclose; wherein the bus subassembly (item 104 and 104’) is a distinct component from the expansion subassembly (item 110), the expansion subassembly further comprising: one or more expansion insulators (fig. 5 item 154, 159 and 134), wherein the one or more expansion busbars (126) are at least partially enclosed in the one or more expansion insulators (item Fig.3 item 134 and 154). As per claim 3 DOZIER disclose; wherein a side shape of the expansion subassembly is complementary with a side shape of the bus subassembly. (Fig. 1 and 7) As per claim 4 DOZIER disclose; wherein the bus subassembly and the expansion subassembly are formed as one unit, the one or more expansion busbars extending from the one or more panelboard busbars and out of the one or more busbar insulators. (fig. 1 shows one unit formed by item 104, 104’ and 110) As per claim 5 DOZIER disclose; wherein the expansion busbar comprises a distal end and a proximal end opposite the distal end and proximal to the panelboard busbars, a thickness of the expansion busbar at the distal end being greater than a thickness of the expansion busbar at the proximal end. (open ends of item 128 facing items 104 is shown as rounded end having less thickness, to slide into item 104) As per claim 7 DOZIER disclose; wherein the one or more expansion busbars further include one or more clips positioned at one or more ends of the one or more expansion busbars. (Fig. 9 Para 0033 and 0059 “Alternatively, plug-on bus bars may be used in some embodiments that employ spring jaws) Claim(s) 8-13 and 15-17 are rejected under 35 U.S.C. 103 as being unpatentable over DOZIER. As per claim 8 DOZIER disclose; An expandable panelboard bus assembly (Fig. 1 item 100) for an electrical panelboard system, the panelboard bus assembly comprising: a bus subassembly (104 and 104’) comprising: one or more busbar insulators (details of well-known insulators item 159 as shown in fig. 5 to prevent short circuit between bus bars od item 104 is not shown in drawing); and one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) at least partially enclosed in the one or more busbar insulators (well-known details not shown); and an expansion subassembly (fig. 3, 5 item 110) comprising: one or more expansion busbars (Fig. 5 item 126a and 126b), wherein the one or more expansion busbars are electrically conductive and at least partially exposed (Fig. 3), wherein the bus subassembly is configured to mechanically and electrically couple with another bus subassembly (fig. 1 item 104 and 104’) via the expansion subassembly (item 110). DOZIER disclose a bus subassembly (104 and 104’) comprising: one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) and further shows in fig. 7 (reproduced below) a “GAP” between line bus item 104 for inserting contacts of bridge assembly. PNG media_image1.png 587 562 media_image1.png Greyscale But do not show a well-known details one or more busbar insulators (details of well-known insulators item 159 as shown in fig. 5 to prevent short circuit between bus bars od item 104 is not shown in drawing); and one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) at least partially enclosed in the one or more busbar insulators (well-known details not shown)at least partially enclosed in the one or more busbar insulators. However in Fig. 5 DOZIER disclose well-known in the art arrangement of, placing insulators (134, 154, 159 and 160) between bus bars (126a and 126b) to create a GAP between busbars. Thus, it would have been recognized by one of ordinary skill in the art that applying the known technique taught by DOZIER fig. 5 to the device of DOZIER fig. 7 and 1 would have yielded predicable results and resulted in an improved assembly, that would allows for electrical isolation between busbars and to create a gap between busbars. As per claim 9 DOZIER disclose; wherein the bus subassembly (item 104 and 104’) is a distinct component from the expansion subassembly (item 110), the expansion subassembly further comprising: one or more expansion insulators (fig. 5 item 154, 159 and 134), wherein the one or more expansion busbars (126) are at least partially enclosed in the one or more expansion insulators (item Fig.3 item 134 and 154). As per claim 10 DOZIER disclose; wherein a side shape of the expansion subassembly is complementary with a side shape of the bus subassembly. (Fig. 1 and 7) As per claim 11 DOZIER disclose; wherein the expansion subassembly further comprises an expansion bolt (fig. 5 item 124) coupled with the one or more expansion insulators and the one or more expansion busbars (Fig. 5). As per claim 12 DOZIER disclose; wherein the bus subassembly and the expansion subassembly are formed as one unit, the one or more expansion busbars extending from the one or more panelboard busbars and out of the one or more busbar insulators. (fig. 1 shows one unit formed by item 104, 104’ and 110) As per claim 13 DOZIER disclose; wherein the expansion busbar comprises a distal end and a proximal end opposite the distal end and proximal to the panelboard busbars, a thickness of the expansion busbar at the distal end being greater than a thickness of the expansion busbar at the proximal end. (open ends of item 128 facing items 104 is shown as rounded end having less thickness, to slide into item 104) As per claim 15 DOZIER disclose; wherein the panelboard busbar comprises a first panelboard sub-busbar (fig. 1 item 104) and a second panelboard sub-busbar (Fig. 1 item 104’), the expansion busbar comprising a first expansion sub-busbar extending from the first panelboard sub-busbar and a second expansion sub-busbar extending from the second panelboard sub-busbar.(Fig. 1 and 7) As per claim 16 DOZIER disclose; wherein the expansion subassembly is interwoven with the bus subassembly.(Fig. 1 and 7) As per claim 17 DOZIER disclose; wherein the one or more expansion busbars further include one or more clips positioned at one or more ends of the one or more expansion busbars. (Fig. 9 Para 0033 and 0059 “Alternatively, plug-on bus bars may be used in some embodiments that employ spring jaws) Claim(s) 18-20 are rejected under 35 U.S.C. 103 as being unpatentable over DOZIER. As per claim 18 DOZIER disclose; . A method of assembling an expandable electrical panelboard system (Fig. 1 item 100), the method including: forming a panelboard bus assembly (line bus 104 and 104’ and 110), the panelboard bus assembly comprising: a bus subassembly (104 and 104’) including: one or more busbar insulators (details of well-known insulators item 159 as shown in fig. 5 to prevent short circuit between bus bars od item 104 is not shown in drawing); and one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) at least partially enclosed in the one or more busbar insulators (well-known details not shown); and an expansion subassembly (fig. 3, 5 item 110) comprising: one or more expansion busbars (Fig. 5 item 126a and 126b), wherein the one or more expansion busbars are electrically conductive and at least partially exposed (Fig. 3), wherein the bus subassembly is configured to mechanically and electrically couple with another bus subassembly (fig. 1 item 104 and 104’) via the expansion subassembly (item 110). DOZIER disclose a bus subassembly (104 and 104’) comprising: one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) and further shows in fig. 7 (reproduced below) a “GAP” between line bus item 104 for inserting contacts of bridge assembly. PNG media_image1.png 587 562 media_image1.png Greyscale But do not show a well-known details one or more busbar insulators (details of well-known insulators item 159 as shown in fig. 5 to prevent short circuit between bus bars od item 104 is not shown in drawing); and one or more panelboard busbars (of line bus 104 and 104’ Para 0024 “line bus 104 in this example is an I-Line bus”) at least partially enclosed in the one or more busbar insulators (well-known details not shown)at least partially enclosed in the one or more busbar insulators. However in Fig. 5 DOZIER disclose well-known in the art arrangement of, placing insulators (134, 154, 159 and 160) between bus bars (126a and 126b) to create a GAP between busbars. Thus, it would have been recognized by one of ordinary skill in the art that applying the known technique taught by DOZIER fig. 5 to the device of DOZIER fig. 7 and 1 would have yielded predicable results and resulted in an improved assembly, that would allows for electrical isolation between busbars and to create a gap between busbars. As per claim 19 DOZIER disclose; wherein the bus subassembly (item 104 and 104’) is a distinct component from the expansion subassembly (item 110), As per claim 20 DOZIER disclose; wherein forming the panelboard bus assembly further comprises forming the expansion subassembly and the bus subassembly as one unit. (Fig. 1) Claim(s) 6 and 14 are rejected under 35 U.S.C. 103 as being unpatentable over DOZIER in view of Philipp Steinberger (Steinberger) US 10,879,642 B2. As per claims 6 and 14 DOZIER do not teach well-known use of wherein the panelboard bus assembly further comprises an insulation cap sized to receive the one or more expansion busbars. However in analogues art Steinberger, disclose well-known use of an insulation cap sized to receive the one or more expansion busbars. (Col. 14 lines 7 and 8) Thus, it would have been recognized by one of ordinary skill in the art that applying the known technique taught by Steinberger to the device of DOZIER would have yielded predicable results and resulted in an improved assembly, that would allows for protection of the busbar ends from damage. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. 1-US 5,760,339 Faulkner Fig. 1-8 disclose bus assembly with busbar expansion joint. 2-US 8717741 B2 Valenzuela Fig. 2 and 3 disclose panel board assembly with busbar and with busbar joint. 3-US 4,627,680 Weimer Fig. 1-9 disclose bus assembly with busbar expansion joint. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MUKUNDBHAI G PATEL whose telephone number is (571)270-1364. The examiner can normally be reached Mon-Thu 7Am-6pm Fri 7-12 pm (Flex). 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, Jayprakash P Gandhi can be reached at (571) 272-3740. 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. /MUKUNDBHAI G PATEL/ Primary Examiner, Art Unit 2835
Read full office action

Prosecution Timeline

Feb 29, 2024
Application Filed
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

1-2
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+30.7%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 780 resolved cases by this examiner. Grant probability derived from career allow rate.

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