Prosecution Insights
Last updated: April 19, 2026
Application No. 18/624,485

HEAT SINK APPARATUS

Non-Final OA §102§103
Filed
Apr 02, 2024
Examiner
AL SAMIRI, KHALED AHMED ALI
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Research & Business Foundation Sungkyunkwan University
OA Round
1 (Non-Final)
45%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
99%
With Interview

Examiner Intelligence

Grants 45% of resolved cases
45%
Career Allow Rate
56 granted / 125 resolved
-25.2% vs TC avg
Strong +60% interview lift
Without
With
+59.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
31 currently pending
Career history
156
Total Applications
across all art units

Statute-Specific Performance

§103
45.6%
+5.6% vs TC avg
§102
19.0%
-21.0% vs TC avg
§112
32.9%
-7.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 125 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 . Election/Restrictions Applicant’s election without traverse of Species A in the reply filed on 01/05/2026 is acknowledged. Claims 13, 16 and 17 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected Species, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 01/05/2026. Claim Rejections - 35 USC § 102 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 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)(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. Claims 1-12, 14, and 15 are rejected under 35 U.S.C. 102(a) (2) as being anticipated by Bandhauer (US20250107038A1). Regarding claim 1, Bandhauer teaches a heat sink apparatus (15: see Figure 5) comprising: a heating body (100: see Figure 7) configured to receive heat from an external heat source (140 and/or 145); a supplier (60) supported by the heating body (100) and configured to supply a cooling fluid (via 50); and a jet ejection part ( jet ejection part of 65) provided in the supplier (60) and configured to inject the cooling fluid supplied by the supplier toward the heating body (see Figures 7 and 8). Regarding claim 2, Bandhauer further teaches wherein the heating body (100) comprises: a first heating body (flat portion of 100); a second heating body (30) extending from the first heating body and configured to support the supplier (60: see Figure 8); and a heat exchange channel (channel of 125) disposed adjacent to the second heating body (30) and configured to guide flow of the cooling fluid injected from the jet ejection part (see Figure 8). Regarding claim 3, Bandhauer further teaches wherein the second heating body (30) and the heat exchange channel (channel of 125) are provided as a plurality of second heating bodies and a plurality of heat exchange channels (see Figures 7 and 8), and the second heating bodies and the heat exchange channels are arranged alternately on the first heating body (flat portion of 100: see Figures 7 and 8). Regarding claim 4, Bandhauer further teaches wherein the supplier (60) comprises: a supply body (flat portion of 60) spaced apart from the second heating body (30: see Figure 8); a support member (portion that is above 35: see Figure 8) extending from the supply body and configured to support the supply body with respect to the second heating body (30: see Figure 8); and a supply channel (65) extending from the support body and disposed inside the heat exchange channel (channel of 125: see Figure 8). Regarding claim 5, Bandhauer further teaches wherein a longitudinal direction of the supply channel (65) is parallel to a longitudinal direction of the heat exchange channel (channel of 125: see Figure 8). Regarding claim 6, Bandhauer further teaches wherein a cross-sectional area of the supply channel (65) is smaller than a cross-sectional area of the heat exchange channel (channel of 125: see in Figures 7 and 8 where 65 smaller than the heat exchange channel of 125, i.e. space between the two adjacent 105). Regarding claim 7, Bandhauer further teaches wherein the support member comprises: a pair of first support members arranged on both sides of the supply body (the two end walls on the left and the right of 60, as shown in Figure 3); and a second support member disposed between the pair of first support members (portion that is above 35: see Figure 8). Regarding claim 8, Bandhauer further teaches wherein a length of the second support member (portion that is above 35) is smaller than a length of the supply channel (65: see in Figures 7 and 8 where length of the portion that is above 35 is smaller than a length of 65). Regarding claim 9, Bandhauer further teaches wherein the supplier (60) further comprises a gas collector (35) disposed adjacent to the supply channel (65) and connected to the heat exchange channel (the heat exchange channel of 125: see Figures 7 and 8). Regarding claim 10, Bandhauer further teaches wherein the gas collector (35) is connected to an upper surface of the heat exchange channel (see in Figure 8 where 35 is connected to the upper surface of the heat exchange channel of 125). Regarding claim 11, Bandhauer further teaches wherein the jet ejection part (jet ejection part of 65) comprises a jet hole (25) formed to pass through the supply channel (65) and configured to inject the cooling fluid to the heat exchange channel (see in Figure 8 jet holes 25). Regarding claim 12, Bandhauer further teaches wherein the jet hole comprises: a first jet hole (jet hole on 75) disposed to face the first heating body (flat portion of 100) and configured to allow the cooling fluid flowing into the supply channel to collide with the first heating body (see Figure 8); and a second jet hole (jet hole on 70) disposed to face the second heating body (30) and configured to allow the cooling fluid flowing into the supply channel to collide with the second heating body (see Figure 8). Regarding claim 14, Bandhauer further teaches further comprising: an inlet (50: see Figure 5) through which the cooling fluid flows into the supplier; and an outlet (55) through which the cooling fluid is discharged from the heating body (see Figure 5). Regarding claim 15, Bandhauer further teaches wherein the inlet (50) comprises: an inlet body (body of 50) extending from the supply body and disposed to face one end of the heat exchange channel (see in Figure 7 where body of 50 is extending from the flat portion of 60 and face the upper end of the heat exchange channel); and an inlet hole (hole of 50) formed to pass through the inlet body and connected to one end of the supply channel (see in Figure 7 where hole of 50 pass through the body of 50 and connected to the upper end of 65), and the outlet comprises a first outlet hole (hole of 55) spaced apart from the inlet hole (hole of 50) and connected to the other end of the heat exchange channel (lower end of the heat exchange channel: see Figures 7 and 8). 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 18 and 19 are rejected under 35 U.S.C. 103 as being unpatentable over Bandhauer (US20250107038A1). Regarding claims 18 and 19, Bandhauer does not teach wherein the supplier is made of a material having lower thermal conductivity than the heating body, wherein the supplier is made of an insulating material. However, it has been held that the selection of a known material based on its suitability for its intended use supports a prima facie obviousness determination (see MPEP 2144.07). It would, therefore, have been obvious to one of ordinary skill in the art before the filing date of the invention to modify the supplier of Bandhauer to be made out of an insulating material and arrive at the claimed invention since it has been held “[t]he selection of a known material based on its suitability for its intended use supported a prima facie obviousness determination in Sinclair & Carroll Co. v. Interchemical Corp., 325 U.S. 327, 65 USPQ 297 (1945) (Claims to a printing ink comprising a solvent having the vapor pressure characteristics of butyl carbitol so that the ink would not dry at room temperature but would dry quickly upon heating were held invalid over a reference teaching a printing ink made with a different solvent that was nonvolatile at room temperature but highly volatile when heated in view of an article which taught the desired boiling point and vapor pressure characteristics of a solvent for printing inks and a catalog teaching the boiling point and vapor pressure characteristics of butyl carbitol. "Reading a list and selecting a known compound to meet known requirements is no more ingenious than selecting the last piece to put in the last opening in a jig-Saw puzzle." 325 U.S. at 335, 65 USPQ at 301.)”: such provision would provide the benefit of increasing the heat dissipation efficiency by allow the cooling fluid to absorb the heat directly from the heating body. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KHALED AL SAMIRI whose telephone number is (571)272-8685. The examiner can normally be reached 10:30AM~3:30PM, M-F (E.S.T.). 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, Jianying Atkisson can be reached at (571) 270-7740. 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. /KHALED AHMED ALI AL SAMIRI/ Examiner, Art Unit 3763 /JIANYING C ATKISSON/ Supervisory Patent Examiner, Art Unit 3763
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Prosecution Timeline

Apr 02, 2024
Application Filed
Jan 30, 2026
Non-Final Rejection — §102, §103 (current)

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

1-2
Expected OA Rounds
45%
Grant Probability
99%
With Interview (+59.6%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 125 resolved cases by this examiner. Grant probability derived from career allow rate.

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