Prosecution Insights
Last updated: May 29, 2026
Application No. 17/950,293

BACKSIDE SIGNAL INTEGRATION THROUGH VIA TO SIGNAL LINE CONNECTION

Final Rejection §102§103
Filed
Sep 22, 2022
Examiner
ENAD, CHRISTINE A
Art Unit
2811
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
International Business Machines Corporation
OA Round
2 (Final)
84%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
1114 granted / 1323 resolved
+16.2% vs TC avg
Moderate +10% lift
Without
With
+10.2%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 11m
Avg Prosecution
46 currently pending
Career history
1389
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
86.3%
+46.3% vs TC avg
§102
3.2%
-36.8% vs TC avg
§112
1.3%
-38.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1323 resolved cases

Office Action

§102 §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 § 102 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)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-6, 8-20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Cho et al (US Publication No. 2022/0020859). PNG media_image1.png 511 778 media_image1.png Greyscale PNG media_image2.png 656 472 media_image2.png Greyscale Regarding claim 1, Cho discloses a semiconductor device, comprising: an isolation region Fig 15B, ST or Fig 20, ST; at least one transistor Fig 15B, PR1 or Fig 20, TR2 comprising a gate region Fig 15B, GE or Fig 20, GE, wherein the gate region is disposed on the first side of the isolation region Fig 15B, ST or Fig 20, ST; a signal line Fig 20, SI disposed on a second side of the isolation region Fig 20 ST opposite the first side of the isolation region Fig 20, ST; a via Fig 15B or Fig 20, TV/LP/MC ¶0094 extending through the isolation region and in contact with the signal line Fig 15B, SI or Fig 20, SI on the second side of the isolation region ¶0094-0095; and a gate contact Fig 15B, GC or Fig 16, UP disposed on the gate region Fig 15B or Fig 16, wherein the via ¶0089 Fig 15B or Fig 16, LP is connected to the gate contact Fig 15B, GC or Fig 16, UP and the signal line Fig 15B, SI or Fig 20, SI is connected to the gate region through the via ¶0094-0095 Fig 15B or Fig 20, TV/LP/MC and the gate contact Fig 15B, GC or Fig 20, UP. Regarding claim 2, Cho discloses wherein the signal line Fig 15B, SI or Fig 20, SI is disposed in a same metallization level as a power element Fig 15B, POR1/POR2 ¶0095. Regarding claim 3, Cho discloses wherein the power element comprises a power rail ¶0041-0042. Regarding claim 4, Cho discloses wherein the at least one transistor further comprises a source/drain region Fig 15A, SD1, and the semiconductor device further comprises an additional via disposed through another portion of the isolation region and on the power element Fig 15A. Regarding claim 5, Cho discloses further comprising a source/drain contact disposed on the source/drain region, wherein the additional via Fig 15A, EP is connected to the source/drain contact Fig 15A. Regarding claim 6, Cho discloses wherein the via contacts a side surface of the gate region Fig 14A. Regarding claim 8, Cho discloses wherein the via is disposed adjacent the gate region Fig 15B and Fig 16. Regarding claim 9, Cho discloses further comprising at least one additional transistor comprising an additional gate region, wherein the additional gate region is disposed on the first side of the isolation region, and wherein the via is disposed between the gate region and the additional gate region Fig 15B, Fig 16 and Fig 20. Regarding claim 10, Cho discloses wherein the gate contact is further disposed on the additional gate region, and wherein the signal line is connected to the additional gate region through the via and the gate contact Fig 15B, Fig 16 and Fig 20. Regarding claim 11, Cho discloses a semiconductor device, comprising: an isolation region Fig 15B, ST or Fig 20, ST; at least one transistor Fig 15B, PR1 or Fig 20, TR2 comprising a gate region Fig 15B, GE or Fig 20, GE and a source/drain region Fig 15A, SD1; wherein the gate region Fig 15B, GE or Fig 20, GE and the source/drain region Fig 15A, SD1 are disposed on a first side of the isolation region Fig 15B, ST or Fig 20, ST; a signal line Fig 20, SI and a power element Fig 15B, POR1/POR2 disposed on a second side of the isolation region Fig 20 ST opposite the first side of the isolation region Fig 20, ST ¶0095; a first via Fig 15B or Fig 20, TV/LP/MC ¶0094 extending through the isolation region and in contact with the signal line Fig 15B, SI or Fig 20, SI; wherein the first via ¶0089,0094-0095 Fig 15B or Fig 20, TV/LP/MC connects the signal line Fig 15B, SI or Fig 20, SI to the gate region Fig 15B, GE or Fig 16, GE; and a second via Fig 15A, EP extending through the isolation region and in contact with the power element Fig 15A, POR1/POR2 ¶0095, wherein the second via connects the power element to the source/drain region Fig 15A. Regarding claim 12, Cho discloses wherein the signal line is disposed in a same metallization level as the power element Fig 15A-15B and Fig 16. Regarding claim 13, Cho discloses wherein the power element comprises a power rail¶0041-0042. Regarding claim 14, Cho discloses a gate contact Fig 15B, GC or Fig 20, UP on the gate region, wherein the first via Fig 15B, LP or Fig 20, LP/TV/MC is connected to the gate contact Fig 15B, GC or Fig 20, UP on and the signal line Fig 15B, SI or Fig 20, SI on is connected to the gate region through the first via and the gate contact Fig 15A-15B and Fig 16. Regarding claim 15, Cho discloses wherein the first via contacts a side surface of the gate region Fig 14A. Regarding claim 16, Cho discloses a source/drain contact on the source/drain region, wherein the second via Fig 15A, EP is connected to the source/drain contact and the power element Fig 15A, POR1/POR2 is connected to the source/drain region through the second via and the source/drain contact Fig 15A. Regarding claim 17, Cho discloses an integrated circuit, comprising: at least one transistor Fig 15B, PR1 comprising a gate region Fig 15B, GE and source/drain region Fig 15A, SD1 which are disposed on a first side of an isolation region Fig 15B, ST or Fig 20, ST;a signal line Fig 20, SI and a power element Fig 15B, POR1/POR2 disposed in a same metallization level on a second side of the isolation region opposite the first side ¶0095 Fig 15A-15B;a first via Fig 15B or Fig 20, TV/LP/MC ¶0094 extending through the isolation region and connecting the gate region Fig 15B, GE or Fig 16, GE to the signal line Fig 15B, SI or Fig 20, SI; and a second via Fig 15A, EP extending through the isolation region and connecting the source/drain region Fig 15A, SD1 to the power element Fig 15A-15B ¶0094-0095. Regarding claim 18, Cho discloses a gate contact Fig 15B, GC on the gate region Fig 15B, GE1, wherein the first via ¶0089 Fig 15B or Fig 20, TV/LP/MC is connected to the gate contact Fig 15B, GC and the signal line Fig 15B, SI is connected to the gate region through the first via and the gate contact Fig 15A-15B. Regarding claim 19, Cho discloses wherein the first via contacts a side surface of the gate region Fig 14A. Regarding claim 20, Cho discloses a source/drain contact on the source/drain region, wherein the second via Fig 15A, EP is connected to the source/drain contact and the power element Fig 15A, POR1/POR2 is connected to the source/drain region through the second via and the source/drain contact Fig 15A. 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 7 is rejected under 35 U.S.C. 103 as being unpatentable over Cho et al (US Publication No. 2022/0020859) in view of Chen et al (US Publication No. 2023/0036522). Regarding claim 7, Cho discloses all the limitations but is silent on the clock signal line. Whereas Chen discloses wherein the signal line comprises a clock signal line ¶0097-0099. Cho and Chen are analogous art because they are directed to semiconductor devices and one of ordinary skill in the art would have had a reasonable expectation of success to modify the device of Cho because they are from the same field of endeavor. Therefore it would have been obvious to one having ordinary skill of the art before the effective filing date of the claimed invention to modify the device of Cho and incorporate the teachings of Chen to improve device synchronization and timing. Response to Arguments Applicant's arguments filed 4/13/2026 have been fully considered but they are not persuasive. Applicants’ argument on Page 7-9 that the prior art of record Cho does not disclose the added limitations, the examiner disagrees and finds the argument unpersuasive. Cho discloses the added limitations as described in detail above through the alternative embodiment illustrated and described in Fig 20. Conclusion THIS ACTION IS MADE FINAL. 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 CHRISTINE A ENAD whose telephone number is (571)270-7891. The examiner can normally be reached Monday-Friday, 7:30 am -4:30 pm. 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, Lynne Gurley can be reached at 571 272 1670. 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. /CHRISTINE A ENAD/Primary Examiner, Art Unit 2811
Read full office action

Prosecution Timeline

Sep 22, 2022
Application Filed
Apr 25, 2024
Response after Non-Final Action
Nov 06, 2025
Non-Final Rejection (signed) — §102, §103
Jan 12, 2026
Non-Final Rejection mailed — §102, §103
Apr 13, 2026
Response Filed
May 14, 2026
Final Rejection mailed — §102, §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
84%
Grant Probability
94%
With Interview (+10.2%)
1y 11m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1323 resolved cases by this examiner. Grant probability derived from career allowance rate.

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