Prosecution Insights
Last updated: August 16, 2026
Application No. 18/524,560

METHODS AND APPARATUS FOR HIGH-HEAT COOKING

Non-Final OA §103
Filed
Nov 30, 2023
Priority
Nov 30, 2022 — provisional 63/428,792
Examiner
CAMPBELL, THOR S
Art Unit
1792
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Electrolux Appliances AB
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
76%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
970 granted / 1295 resolved
+9.9% vs TC avg
Minimal +1% lift
Without
With
+0.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
31 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 . Election/Restrictions Claims 8-20 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 04/09/2026. 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) 1-6, 21 is/are rejected under 35 U.S.C. 103 as being unpatentable over Stark (US 6640695B2) in view of Parks et al. (US 8499944B2). Stark discloses in reference to claim: 1. A rack assembly 10 that is mountable within an oven cavity of a cooking appliance (barbeque grill 27), the rack assembly comprising: a cooking stone 16; an insulating mat 18 defining a recess 12 configured to accommodate the cooking stone 16; and a rack 25 configured to support the insulating mat 18. PNG media_image1.png 560 862 media_image1.png Greyscale PNG media_image2.png 709 912 media_image2.png Greyscale Stark does not explicitly show wherein a superficial area of the insulating mat is at least 70% of a superficial area of the rack. Parks discloses a similar baking stone device for an oven cavity wherein the superficial area of the baking stone is at least 70% of a superficial area of the rack. Since a change in size is generally considered to be within the ordinary skill of an artisan, the artisan would have found it obvious to modify the device of Stark in light of the teachings of Parks, to provide the superficial area of the insulating mat is at least 70% of a superficial area of the rack. 2. The rack assembly according to claim 1, wherein the insulating mat 18 inhibits lateral movement of the cooking stone when accommodated within the recess. 3. The rack assembly according to claim 1, wherein: the rack 25 comprises a plurality of wires that extend within a primary plane, and the insulating mat 18 includes a bottom wall 54 configured to support the cooking stone when accommodated within the recess, wherein a distance between the bottom wall and the primary plane is 1 to 6 inches. Stark discloses the total preferred distance of the cooking surface 37 from the grill 25 is approximately three inches. 4. The rack assembly according to claim 1, wherein the rack 25 inhibits (at least by friction) lateral movement of the insulating mat and the cooking stone in first and second opposing directions relative to the rack. 5. The rack assembly according to claim 1, wherein: the insulating mat 18 comprises a receiving portion that defines the recess (see figures), and the rack defines a well configured to accommodate the receiving portion when the insulating mat rests on the rack, the well having dimensions complementary to dimensions of the recess portion of said insulating mat. Note that Parks teaches the use of a rack having a well configured to accommodate the baking stone. One of skill in the art would have found it obvious, in light of Parks to modify the rack of Stark to include a rack defining a well configured to accommodate the receiving portion when the insulating mat rests on the rack, the well having dimensions complementary to dimensions of the recess portion of said insulating mat. 6. The rack assembly according to claim 1, wherein the insulating mat comprises a single metal sheet 54 that defines the recess. 21. (New) The rack assembly according to claim 1, wherein said recess 12 is partially defined by opposite first and second side walls (see fig. 1), and a rear wall 23, wherein when said cooking stone is accommodated within said recess 12, said rear wall 23 extends vertically beyond a rear edge of said cooking stone. PNG media_image3.png 362 815 media_image3.png Greyscale Claim(s) 7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Stark (US 6640695B2) in view of Parks et al. (US 8499944B2) and further in view of Johnson et al. (US 11972997B2). Stark in view of Parks discloses the claimed invention except in reference to claim: 7. The rack assembly according to claim 1, wherein the cooking stone comprises a solid body and a temperature sensor affixed to or embedded within the solid body. Johnson discloses a cooking stone 166 received in a recess in an oven chamber wherein the cooking stone comprises a solid body and a temperature sensor 176 affixed to or embedded within the solid body. As it is a common desire of the artisan in cooking endeavors to provide the greatest temperature control and sensing to the user, one of skill in the art would have found it obvious to modify the Stark device to include a temperature sensor within the stone body at taught by Johnson such that the temperature of the stone could be accurately sensed or monitored for best results. 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

Nov 30, 2023
Application Filed
Jun 24, 2024
Response after Non-Final Action
Mar 17, 2026
Response after Non-Final Action
Jul 28, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12702165
Electronic Cigarette
4y 3m to grant Granted Aug 11, 2026
Patent 12703906
EVAPORATION BOAT
4y 1m to grant Granted Aug 11, 2026
Patent 12702140
REVERSE FLOW COMBINATION COOKING APPARATUS
3y 5m to grant Granted Aug 11, 2026
Patent 12701640
HEATING ELEMENT WITH OPEN-CELL STRUCTURE
4y 3m to grant Granted Aug 04, 2026
Patent 12696992
JUICING DEVICES AND METHODS
3y 6m to grant Granted Aug 04, 2026
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 (~2m 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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