Prosecution Insights
Last updated: May 29, 2026
Application No. 17/872,576

HEATING SYSTEM FOR WINDSHIELD

Non-Final OA §102§112
Filed
Jul 25, 2022
Examiner
ROSARIO-APONTE, ALBA T
Art Unit
3761
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
GM Global Technology Operations LLC
OA Round
2 (Non-Final)
54%
Grant Probability
Moderate
2-3
OA Rounds
0m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allowance Rate
254 granted / 468 resolved
-15.7% vs TC avg
Strong +27% interview lift
Without
With
+26.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
21 currently pending
Career history
516
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
81.3%
+41.3% vs TC avg
§102
9.7%
-30.3% vs TC avg
§112
7.2%
-32.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 468 resolved cases

Office Action

§102 §112
DETAILED ACTION 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 § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. In claim 1, lines 10 and 11, the limitation “a secondary vision zone” is unclear if it is referring to the secondary bottom vision zone or the secondary top vision zone recited in line 4. In claim 8, lines 12 and 13, the limitation “a secondary vision zone” is unclear if it is referring to the secondary bottom vision zone or the secondary top vision zone recited in line 6. In claim 15, line 11 and 12, the limitation “a secondary vision zone” is unclear if it is referring to the secondary bottom vision zone or the secondary top vision zone recited in line 5. Claims 2-7, 9-14 and 16-20 are rejected because of their dependency from claim 1. 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 1-20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by SCHALL (EP 2146548). Regarding claim 1, SCHALL teaches a heating system (system within window shown in Fig. 1) for a window (Fig. 1), comprising a conductive coating (2) disposed between a first pane (1.1; para. 0060) and a second pane (1.2; para. 0060) of the window (as shown in Fig. 3; para. 0076-0077), the conductive coating extending through a primary vision zone (middle zone were coating 2 is located) of the window from a secondary bottom vision zone (5G) of the window to a secondary top vision zone (4G) of the window; a first busbar (5) along a lower edge of the window (as shown in Fig. 1); and a first electrical wire (12 at conductive structure 5G) for flowing a current into the conductive coating to generate heat within the primary vision zone (para. 0058; para. 0066; para. 0079), the first electrical wire connected to the first busbar at the lower edge of the window (as shown in Fig. 1), extending through the secondary vision zone and connected to the conductive coating at a top edge of the secondary vision zone (as shown in Fig. 1; structures 4G and 5G, which contain electrical wires 12, extend from the bus bars 4 and 5 respectively, and there is an electrical connection between the bus bars (4, 5), the coating (2) and the conductive structures (4G, %G); para. 0058; 0066). Regarding claim 2, SCHALL teaches the heating system as set forth above, further comprising a polyvinyl butyral layer (PVB layer) (1.3) that bonds the first pane to the second pane (para. 0076), wherein the conductive coating and the first electrical wire are one of: (i) between the PVB layer and the first pane; and (ii) between the PVB layer and the second pane (as shown in Fig. 3). Regarding claim 3, SCHALL teaches the heating system as set forth above, further comprising a second electrical wire (12 at conductive structure 4G) connecting to the conductive coating within the secondary top vision zone (para. 0058; para. 0066; para. 0079). Regarding claim 4, SCHALL teaches the heating system as set forth above, wherein the first electrical wire is connected to a first terminal of a power supply via a first bus bar (5) along a lower edge of the window (as shown in Fig. 1 and 3; para. 0064; para. 0077) and the second electrical wire is connected to a second terminal of the power supply via a second bus bar (4) along an upper edge of the window (as shown in Fig. 1; para. 0064; para. 0077). Regarding claim 5, SCHALL teaches the heating system as set forth above, wherein the first electrical wire has a diameter of between about 15 microns and about 50 microns (para. 0029). Regarding claim 6, SCHALL teaches the heating system as set forth above, wherein the first electrical wire makes at least one of: (i) an oscillatory waveform defined within a plane; and (11) a straight line (as shown in Fig. 4). Regarding claim 7, SCHALL teaches the heating system as set forth above, wherein the first electrical wire has a first resistivity and the conductive coating has second resistivity (para. 0053; para. 0069). Regarding claim 8, SCHALL teaches a window (Fig. 1) of a vehicle (para. 0043), comprising a first pane (1.1); a second pane (1.2); a conductive coating (2) disposed between the first pane and the second pane (as shown in Fig. 3; para. 0076-0077), the conductive coating extending through a primary vision zone (middle zone were coating 2 is located) of the window from a secondary bottom vision zone (5G) of the window to a secondary top vision zone (4G) of the window; a first busbar (5) along a lower edge of the window (as shown in Fig. 1); and a first electrical wire (12 at conductive structure 5G) for flowing a current into the conductive coating to generate heat within the primary vision zone (para. 0058; para. 0066; para. 0079), the first electrical wire connected to the first busbar at the lower edge of the window (as shown in Fig. 1), extending through the secondary vision zone and connected to the conductive coating at a top edge of the secondary vision zone (as shown in Fig. 1; structures 4G and 5G, which contain electrical wires 12, extend from the bus bars 4 and 5 respectively, and there is an electrical connection between the bus bars (4, 5), the coating (2) and the conductive structures (4G, %G); para. 0058; 0066). Regarding claim 9, SCHALL teaches the window as set forth above, further comprising a polyvinyl butyral layer (PVB layer) (1.3) that bonds the first pane to the second pane (para. 0076), wherein the conductive coating and the first electrical wire are one of: (i) between the PVB layer and the first pane; and (ii) between the PVB layer and the second pane (as shown in Fig. 3). Regarding claim 10, SCHALL teaches the window as set forth above, further comprising a second electrical wire (12 at conductive structure 4G) connecting to the conductive coating within the secondary top vision zone (para. 0058; para. 0066; para. 0079). Regarding claim 11, SCHALL teaches the window as set forth above, wherein the first electrical wire is connected to a first terminal of a power supply via a first bus bar (5) along a lower edge of the window (as shown in Fig. 1 and 3; para. 0064; para. 0077) and the second electrical wire is connected to a second terminal of the power supply via a second bus bar (4) along an upper edge of the window (as shown in Fig. 1; para. 0064; para. 0077). Regarding claim 12, SCHALL teaches the window as set forth above, wherein the first electrical wire has a diameter of between about 15 microns and about 50 microns (para. 0029). Regarding claim 13, SCHALL teaches the window as set forth above, wherein the first electrical wire makes at least one of: (i) an oscillatory waveform defined within a plane; and (11) a straight line (as shown in Fig. 4). Regarding claim 14, SCHALL teaches the window as set forth above, wherein the first electrical wire has a first resistivity and the conductive coating has second resistivity (para. 0053; para. 0069). Regarding claim 15, SCHALL teaches a vehicle (para. 0043), comprising: a window (Fig. 1) having a first pane (1.1) and a second pane (1.2); a conductive coating (2) disposed between the first pane and the second pane (as shown in Fig. 3; para. 0076-0077), the conductive coating extending through a primary vision zone (middle zone were coating 2 is located) of the window from a secondary bottom vision zone (5G) of the window to a secondary top vision zone (4G) of the window; a first busbar (5) along a lower edge of the window (as shown in Fig. 1); and a first electrical wire (12 at conductive structure 5G) for flowing a current into the conductive coating to generate heat within the primary vision zone (para. 0058; para. 0066; para. 0079), the first electrical wire connected to the first busbar at the lower edge of the window (as shown in Fig. 1), extending through the secondary vision zone and connected to the conductive coating at a top edge of the secondary vision zone (as shown in Fig. 1; structures 4G and 5G, which contain electrical wires 12, extend from the bus bars 4 and 5 respectively, and there is an electrical connection between the bus bars (4, 5), the coating (2) and the conductive structures (4G, %G); para. 0058; 0066). Regarding claim 16, SCHALL teaches the vehicle as set forth above, further comprising a polyvinyl butyral layer (PVB layer) (1.3) that bonds the first pane to the second pane (para. 0076), wherein the conductive coating and the first electrical wire are one of: (i) between the PVB layer and the first pane; and (ii) between the PVB layer and the second pane (as shown in Fig. 3). Regarding claim 17, SCHALL teaches the vehicle as set forth above, further comprising a second electrical wire (12 at conductive structure 4G) connecting to the conductive coating within the secondary top vision zone (para. 0058; para. 0066; para. 0079). Regarding claim 18, SCHALL teaches the vehicle as set forth above, wherein the first electrical wire is connected to a first terminal of a power supply via a first bus bar (5) along a lower edge of the window (as shown in Fig. 1 and 3; para. 0064; para. 0077) and the second electrical wire is connected to a second terminal of the power supply via a second bus bar (4) along an upper edge of the window (as shown in Fig. 1; para. 0064; para. 0077). Regarding claim 19, SCHALL teaches the vehicle as set forth above, wherein the first electrical wire has a diameter of between about 15 microns and about 50 microns (para. 0029). Regarding claim 20, SCHALL teaches the vehicle as set forth above, wherein the first electrical wire makes at least one of: (i) an oscillatory waveform defined within a plane; and (11) a straight line (as shown in Fig. 4). Response to Arguments Applicant's arguments filed 08/26/2025 have been fully considered but they are not persuasive. Regarding claim 1, Applicant argues that “However, Schall does not show or disclose an electrical wire that connects to the busbar at one end and then extends away from the busbar before connecting to the conductive coating. Therefore, Applicant submits that Schall does not show or disclose at least the features of a first busbar along a lower edge of the window; and a first electrical wire for flowing a current into the conductive coating to generate heat within the primary vision zone, the first electrical wire connected to the first busbar at the lower edge of the window, extending through the secondary vision zone and connected to the conductive coating at a top edge of the secondary vision zone, as specified in amended claim 1.” on remarks page 7, lines 4-12. In response to Applicant’s arguments, Schall teaches a first busbar (5) along a lower edge of the window (as shown in Fig. 1); and a first electrical wire (12 at conductive structure 5G) for flowing a current into the conductive coating (2) to generate heat within the primary vision zone (middle zone were coating 2 is located) (para. 0058; para. 0066; para. 0079), the first electrical wire connected to the first busbar (5) at the lower edge of the window (as shown in Fig. 1), extending through the secondary vision zone and connected to the conductive coating at a top edge of the secondary vision zone (as shown in Fig. 1; structures 4G and 5G, which contain electrical wires 12, extend from the bus bars 4 and 5 respectively, and there is an electrical connection between the bus bars (4, 5), the coating (2) and the conductive structures (4G, %G); para. 0058; 0066). For these reasons, the arguments are not persuasive. Regarding claims 2-20, Applicant relies on the same arguments, therefore, the same response applies. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 ALBA T ROSARIO-APONTE whose telephone number is (571)272-9325. The examiner can normally be reached M to F; 8am-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, Steven Crabb can be reached at 571-270-5095. 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. /ALBA T ROSARIO-APONTE/Examiner, Art Unit 3761 10/24/2025 /STEVEN W CRABB/Supervisory Patent Examiner, Art Unit 3761
Read full office action

Prosecution Timeline

Show 1 earlier event
Jun 03, 2025
Non-Final Rejection mailed — §102, §112
Jul 22, 2025
Interview Requested
Aug 05, 2025
Examiner Interview Summary
Aug 05, 2025
Applicant Interview (Telephonic)
Aug 26, 2025
Response Filed
Oct 29, 2025
Final Rejection mailed — §102, §112
Dec 01, 2025
Interview Requested
Dec 17, 2025
Response after Non-Final Action

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
54%
Grant Probability
81%
With Interview (+26.8%)
3y 10m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 468 resolved cases by this examiner. Grant probability derived from career allowance rate.

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