Prosecution Insights
Last updated: April 17, 2026
Application No. 18/131,694

ROAD HEATER SYSTEM

Non-Final OA §102§103
Filed
Apr 06, 2023
Examiner
LESLIE, MICHAEL S
Art Unit
3745
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
unknown
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
95%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
915 granted / 1129 resolved
+11.0% vs TC avg
Moderate +14% lift
Without
With
+14.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
12 currently pending
Career history
1141
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
28.2%
-11.8% vs TC avg
§102
37.7%
-2.3% vs TC avg
§112
27.6%
-12.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1129 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 Objections Claims 3-4 & 9 are objected to because of the following informalities: Claim 3, Line 5, “the predetermined pavement temperature” should be --a predetermined pavement temperature--; Claim 4, Line 5, “the predetermined pavement temperature” should be --a predetermined pavement temperature--; Claim 9, Line 19, “the predetermined pavement temperature” should be --a predetermined pavement temperature--. Appropriate correction is required. 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. (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 1 is rejected under 35 U.S.C. 102(a)(1)&(a)(2) as being anticipated by Vega (6758630). Vega discloses a road heater system (e.g. Fig. 1) comprising: a roadway (e.g. 13) comprising a pavement (e.g. ~13, Fig. 2) and a plurality of rebar (e.g. 12), the plurality of rebar being embedded in the pavement (e.g. Col. 3, Ln. 55-56); a control circuit (e.g. 20) being electrically coupled to the plurality of rebar; and an electric generator being electrically coupled to the control circuit, the control circuit selectively directing an electrical current from the electric generator through the plurality of rebar, thereby heating the plurality of rebar and the pavement via resistive heating (e.g. Col. 1, Ln. 17-42 & Col. 4, Ln. 6-26). 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. Claims 2-11 are rejected under 35 U.S.C. 103 as being unpatentable over Vega (6758630) in view of Oskwarek (10383175). Vega discloses a road heater system, as described above, further including a control system (e.g. Col. 4, Ln. 6-26), but does not explicitly teach an air thermometer being electrically coupled to the control circuit, the air thermometer being positioned such that the air thermometer is configured for sensing a temperature of a volume of air adjacent to the roadway, the control circuit being programmed to direct the electrical current through the rebar when the temperature of the volume of air is less than a predetermined air temperature; a road thermometer being electrically coupled to the control circuit, the road thermometer being positioned to sense a temperature of the pavement, the control circuit being programmed to terminate directing the electrical current through the rebar when the temperature of the pavement is greater than the predetermined pavement temperature; wherein the control circuit is programmed to activate the electric generator when the temperature of the volume of air is less than the predetermined air temperature, the control circuit being programmed to deactivate the electric generator when the temperature of the pavement is greater than the predetermined pavement temperature; the electric generator comprises a power storage, the electric generator being configured to electrically charge the power storage; the power storage comprises a battery; or the electric generator further comprises a solar panel, the solar panel being electrically coupled to the power storage. Oskwarek teaches a surface heater system having an air thermometer (e.g. 130) being electrically coupled to the control circuit, the air thermometer being positioned such that the air thermometer is configured for sensing a temperature of a volume of air adjacent to the roadway, the control circuit being programmed to direct the electrical current through the rebar when the temperature of the volume of air is less than a predetermined air temperature (e.g. 32 F, Step 815); a road thermometer (e.g. 125) being electrically coupled to the control circuit, the road thermometer being positioned to sense a temperature of the pavement, the control circuit being programmed to terminate directing the electrical current through the rebar when the temperature of the pavement is greater than a predetermined pavement temperature (e.g. TC); wherein the control circuit is programmed to activate the electric generator when the temperature of the volume of air is less than the predetermined air temperature, the control circuit being programmed to deactivate the electric generator when the temperature of the pavement is greater than the predetermined pavement temperature (e.g. Fig. 8); the electric generator comprises a power storage (e.g. directly associated with 220, 225, Col. 4, Ln. 66 - Col. 5, Ln. 3), the electric generator being configured to electrically charge the power storage; the power storage comprises a battery (e.g. associated with at least 220); and the electric generator further comprises a solar panel (e.g. at least 225 as a known domestic power supply, Col. 5, Ln. 1-3), the solar panel being electrically coupled to the power storage. Vega and Oskwarek both seek to heat a surface in order to prevent accumulation of ice and/or snow, thus it would have been obvious to one having ordinary skill in the art at the time the invention was filed to modify the control system of Vega to include an air thermometer being electrically coupled to the control circuit, the air thermometer being positioned such that the air thermometer is configured for sensing a temperature of a volume of air adjacent to the roadway, the control circuit being programmed to direct the electrical current through the rebar when the temperature of the volume of air is less than a predetermined air temperature; a road thermometer being electrically coupled to the control circuit, the road thermometer being positioned to sense a temperature of the pavement, the control circuit being programmed to terminate directing the electrical current through the rebar when the temperature of the pavement is greater than the predetermined pavement temperature; wherein the control circuit is programmed to activate the electric generator when the temperature of the volume of air is less than the predetermined air temperature, the control circuit being programmed to deactivate the electric generator when the temperature of the pavement is greater than the predetermined pavement temperature; the electric generator comprises a power storage, the electric generator being configured to electrically charge the power storage; the power storage comprises a battery; and the electric generator further comprises a solar panel, the solar panel being electrically coupled to the power storage, as taught by Oskwarek, for the purpose of preventing the accumulation of ice and/or snow on a road surface. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. 6592288 & 20040016740 cited, but not relied upon, are considered to anticipate at least Claim 1. Additional references listed on form PTO-892 are cited for their relevance to the disclosed invention and demonstration of the state of the art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL LESLIE whose telephone number is (571)272-4819. The examiner can normally be reached M - F 8 am - 4-30pm. 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, Nathaniel Wiehe can be reached at (571)272-8648. 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. /MICHAEL LESLIE/ Primary Examiner, Art Unit 3745 December 11, 2025
Read full office action

Prosecution Timeline

Apr 06, 2023
Application Filed
Dec 11, 2025
Non-Final Rejection — §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

1-2
Expected OA Rounds
81%
Grant Probability
95%
With Interview (+14.3%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 1129 resolved cases by this examiner. Grant probability derived from career allow rate.

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