Prosecution Insights
Last updated: April 19, 2026
Application No. 18/422,102

Adjustable Heat Spreader for a Heat Sink

Final Rejection §103
Filed
Jan 25, 2024
Examiner
LANE, DEVON
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Aptiv Technologies AG
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
3y 2m
To Grant
70%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
422 granted / 765 resolved
-14.8% vs TC avg
Moderate +15% lift
Without
With
+14.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
46 currently pending
Career history
811
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
50.7%
+10.7% vs TC avg
§102
20.5%
-19.5% vs TC avg
§112
27.0%
-13.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 765 resolved cases

Office Action

§103
DETAILED ACTION 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(s) 1-12, 14-15, and 17-18 is/are rejected under 35 U.S.C. 103 as unpatentable over Suzuki (US 5,862,038) in view of Daikoku (US 5,751,062). Regarding claim 1, Suzuki teaches an adjustable heat spreader comprising a mounting body (35) for mounting to a support surface (34) having at least one element (33) to be cooled; and at least one heat spreading insert (38) adjustably (e.g. Figs. 12a/b) fitted with the mounting body so that an insert contact surface (bottom of 37) is brought into contact (see Fig. 12b) with the element to be cooled; wherein the mounting body includes a mount contact surface (upper surface of 35) for interfacing with a separable heat sink (41). Suzuki only teaches vertical adjustment of the heat spreading insert. Daikoku teaches that it is old and well-known to utilize heat spreading inserts (elements 6 and 7, Fig. 2) which are adjustable along both vertical (along spring 9) and lateral (along the direction parallel to 6a and 7a; see Figs. 2 and 3) axes relative to the surface of the element to be cooled (top surface of 1). It would have been obvious to one of ordinary skill to modify Suzuki such that the heat spreading inserts are mobile in multiple directions, as taught by Daikoku, in order to increase the precision of the devices contact with the element to be cooled. Regarding claims 3-4, Suzuki teaches that the heat spreading insert (38) is mounted through an opening in the body and Daikoku further teaches that said insert (6/7) is capable of lateral motion (see Figs. 2-3). Suzuki further teaches that: the mounting body includes fastening features (36) for fastening with the support surface in a non-adjustable, in use, spatial relationship (e.g. Fig. 12a), per claim 5; the threads (91, 92) constitute a gripping means which assist in the adjustment of the insert relative to the mounting body and the support surface, per claim 6; multiple inserts may be used for multiple elements to be cooled (see Figs. 12a/b), per claim 7; contact is via a first layer (40) of TIM, per claim 9; a second layer of TIM (39) is applied at an opposite side of the insert in proximity to or contacting the heat sink (see Fig. 12a), per claim 10; the second layer (39) of TIM is substantially thicker than the first layer (40; see Figs. 12a/b), per claim 11; a TIM is present between the heat sink (41) and the mount contact surface (Col. 11:57-59), per claim 12; the support surface is a PCB (34) and the element to be cooled is an electronic component on the PCB (33), per claims 14 and 15. Regarding claim 18, Daikoku further teaches that the lateral sliding is accomplished via rails (6a, 7a). Regarding claim 17, Suzuki further teaches a mount contact surface (upper surface of 35 which contacts 41) for interfacing with a separable heat sink (41). Regarding claim 8, a heat sink (41) is fitted against the mount contact surface and the heat spreading insert is adjustably fitted to contact at the insert contact surface with the element to be cooled (sese 40 in Fig. 12b). In the combined teachings this surface will be equivalent to the bottom surface of 6b in Daikoku which is also slidably adjustable. Claim(s) 13 and 16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Suzuki in view of Daikoku and Rademacher (US 2022/0377945). Suzuki does not specify use of the device with a heat sink forming part of the body of a vehicle. Rademacher teaches that such heat sinks are commonly used with vehicles (Para. [0050] and [0051]). It would have been obvious to one of ordinary skill to utilize the device of Suzuki with a vehicle having a body, as taught by Rademacher, as such vehicles are known to require cooling. It is noted that the term “body” in the claim is interpreted to encompass all of the physical structures of the vehicle as no positive or negative limitations have been recited to clarify or define it. Response to Arguments Applicant’s arguments with respect to claim(s) 1-18 have been considered but are moot because the arguments depend entirely on the newly entered limitations and the new ground of rejection above addresses these. 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 Devon Lane whose telephone number is (571)270-1858. The examiner can normally be reached M-Th, 9-4. 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, Jerry-Daryl Fletcher can be reached at 571.270.5054. 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. /DEVON LANE/ Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Jan 25, 2024
Application Filed
Aug 04, 2025
Non-Final Rejection — §103
Nov 05, 2025
Response Filed
Mar 26, 2026
Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12578149
VERTICAL VAPOR GENERATOR
2y 5m to grant Granted Mar 17, 2026
Patent 12566032
VAPOR CHAMBER ASSEMBLY
2y 5m to grant Granted Mar 03, 2026
Patent 12566035
SIMPLE DISTRIBUTOR FOR INLET MANIFOLD OF MICROCHANNEL HEAT EXCHANGER
2y 5m to grant Granted Mar 03, 2026
Patent 12553670
A COOLING ASSEMBLY
2y 5m to grant Granted Feb 17, 2026
Patent 12553567
ADJUSTABLE ROTOR SUPPORT AND ROTARY HEAT EXCHANGER WITH SUCH SUPPORT
2y 5m to grant Granted Feb 17, 2026
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
55%
Grant Probability
70%
With Interview (+14.8%)
3y 2m
Median Time to Grant
Moderate
PTA Risk
Based on 765 resolved cases by this examiner. Grant probability derived from career allow rate.

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