Prosecution Insights
Last updated: August 15, 2026
Application No. 18/419,975

PTC WATER HEATER WITH MODULAR FASTENING AND HEATING COMPONENTS

Non-Final OA §103
Filed
Jan 23, 2024
Priority
Aug 18, 2023 — CN 202322242658.0
Examiner
CAMPBELL, THOR S
Art Unit
Tech Center
Assignee
Dongguan Sharing Electronics Co. Ltd.
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
4m
Est. Remaining
76%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
970 granted / 1295 resolved
+14.9% vs TC avg
Minimal +1% lift
Without
With
+0.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
32 currently pending
Career history
1348
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
47.6%
+7.6% vs TC avg
§102
30.6%
-9.4% vs TC avg
§112
13.7%
-26.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1295 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. The Supreme Court in KSR International Co. v. Teleflex Inc., 82 USPQ2d 1385, 1395-97 (2007) identified a number of rationales to support a conclusion of obviousness which are consistent with the proper “functional approach” to the determination of obviousness as laid down in Graham. The key to supporting any rejection under 35 U.S.C. 103 is the clear articulation of the reason(s) why the claimed invention would have been obvious. The Supreme Court in KSR noted that the analysis supporting a rejection under 35 U.S.C. 103 should be made explicit. EXEMPLARY RATIONALES Exemplary rationales that may support a conclusion of obviousness include: (A) Combining prior art elements according to known methods to yield predictable results; (B) Simple substitution of one known element for another to obtain predictable results; (C) Use of known technique to improve similar devices (methods, or products) in the same way; (D) Applying a known technique to a known device (method, or product) ready for improvement to yield predictable results; (E) “Obvious to try” – choosing from a finite number of identified, predictable solutions, with a reasonable expectation of success; (F) Known work in one field of endeavor may prompt variations of it for use in either the same field or a different one based on design incentives or other market forces if the variations are predictable to one of ordinary skill in the art; (G) Some teaching, suggestion, or motivation in the prior art that would have led one of ordinary skill to modify the prior art reference or to combine prior art reference teachings to arrive at the claimed invention. Claim(s) 1-3 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kim et al. (US 2017/0295613A1) in view of Qin et al. (US 2013/0191985A1). Kim discloses in reference to claim: 1. A PTC heater 1 with modular fastening and heating components (“at least one heating module”—Abstract), comprising a electrode plate (terminal plate 120), a PTC ceramic plate 130, a thermally conductive silicone part (insulating pad 140--The insulating pad 140 may be formed of a material that is electrically insulating and thermally conductive. The insulating pad 140 may be a silicon pad ), and a U-shaped fastening aluminum part (outer clip 150-- It is preferable that the outer clip 150 may be a metallic clip that is formed of a metal having a strength that is higher than that of silicon. It is preferable that the outer clip 150 is a metallic clip having a high thermal conductivity, and it is more preferable that the outer clip 150 be an aluminum clip.), wherein the thermally conductive silicone part 140 is arranged in the U-shaped fastening aluminum part and are suitable for the fastening aluminum part (See fig. 12), wherein the PTC ceramic plate 130 is placed inside the thermally conductive silicone part, and wherein the electrode plate 120 is positioned on a side of the PTC ceramic plate 130 and is arranged inside the thermally conductive silicone part –See Fig. 13. PNG media_image1.png 774 878 media_image1.png Greyscale PNG media_image2.png 1026 801 media_image2.png Greyscale PNG media_image3.png 677 613 media_image3.png Greyscale PNG media_image4.png 1026 756 media_image4.png Greyscale Kim fails to explicitly disclose the use of copper electrode plates for providing power to the PTC ceramic plates of the heater. The use of copper as an electrode material is well known in the art at evidenced by Qin et al. Qin discloses a PTC heating component including two oppositely positioned electrode plates 12, generally made of silver, copper, aluminum or other materials with good conductive performance. Since Qin discloses the use of copper for the material of the electrodes in similar heating device it would have been obvious to one of skill in the art to modify the Kim device to use copper as the material for the electrode plates under KSR rationales A, B, or C 2. The PTC heater according to claim 1, wherein the U-shaped fastening aluminum part is fastened to a water tank 2 . See figure 4 3. The PTC heater according to claim 1, wherein the U-shaped fastening aluminum part is provided with symmetrical bending portions on a side. See Figure 13 at 153 or 154 The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to THOR S CAMPBELL whose telephone number is (571)272-4776. The examiner can normally be reached M,W-F 6:30-10:30, 12-4. 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, Ibrahime Abraham can be reached at 5712705569. 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. /THOR S CAMPBELL/ Primary Examiner Art Unit 3761 tsc
Read full office action

Prosecution Timeline

Jan 23, 2024
Application Filed
Jul 22, 2026
Non-Final Rejection mailed — §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
76%
With Interview (+0.6%)
2y 11m (~4m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1295 resolved cases by this examiner. Grant probability derived from career allowance rate.

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