Prosecution Insights
Last updated: May 29, 2026
Application No. 18/033,370

FRACTAL STORE

Final Rejection §103
Filed
Apr 24, 2023
Priority
Oct 23, 2020 — DE 102020127987.6 +1 more
Examiner
RUPPERT, ERIC S
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Kraftblock GmbH
OA Round
4 (Final)
59%
Grant Probability
Moderate
5-6
OA Rounds
0m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allowance Rate
444 granted / 752 resolved
-11.0% vs TC avg
Strong +25% interview lift
Without
With
+24.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
46 currently pending
Career history
805
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
84.7%
+44.7% vs TC avg
§102
6.0%
-34.0% vs TC avg
§112
8.0%
-32.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 752 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 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) 1-2, 4-10 and 12-21 is/are rejected under 35 U.S.C. 103 as being unpatentable over Umeoka (JP2000111287A) in view of Benson (US20100025407A1). Regarding claim 1, Umeoka teaches a thermal store (see Fig. 1-9), comprising: a basic framework with a three-dimensional grid having a plurality of cells (tank units 1); and boundary surfaces (surfaces therebetween) between adjacent ones of the cells that are surrounded by grid lines of the grid that are arranged at edges of the cells, wherein at least one of the boundary surfaces between adjacent cells is permeable (see connections in Fig. 1, element 6, or Fig. 6, 21c) to a fluid to form a flow path from cell to cell for the fluid. Umeoka does not teach girders which form supports in the basic framework of the thermal store and are arranged in an area of the grid lines of the grid and connected to one another in an area of grid points of the grid at the edges of the cells to form the plurality of cells. Benson teaches (see Fig. 1 & 9) girders (frame 20 including beams 22, posts 24) which form supports in the basic framework of the thermal store and are arranged in an area of the grid lines of the grid at the edges of the cells, and connected to one another in an area of grid points of the grid to form the plurality of cells. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified to include the girders of Benson, in order to provide strength and rigidity (¶[0041]). Regarding claim 2, Umeoka teaches the limitations of claim 1, and Umeoka further teaches at least one of the boundary surfaces between adjacent cells is impermeable to the fluid (via partition lid/cover – 4-3). Regarding claim 4, Umeoka teaches the limitations of claim 1, and Umeoka further teaches the thermal store includes a plurality of modules each forming a cell (tank units 1) of the grid, the modules being arranged adjacent to one another and/or one over another and connected to one another in such a way that the modules form the basic framework and/or parts of the basic framework the thermal store. Regarding claim 5, Umeoka teaches the limitations of claim 1, and Umeoka further teaches the thermal store includes a filling with a thermal storage material (thermal storage material 5) which is designed as a bulk material and/or lining through which the fluid can flow. Regarding claim 6, Umeoka teaches the limitations of claim 1, and Umeoka further teaches the boundary surfaces (surfaces of 1) permeable to the fluid and abutting one another are open and wherein the filling forms a continuous bulk material and/or lining (5) uninterrupted by the open boundary surfaces. Regarding claim 7-8, Umeoka teaches the limitations of claim 7, and Umeoka further teaches a part of the abutting boundary surfaces is not permeable to the fluid in order to preset a flow path through the thermal store for the fluid, and the boundary surfaces not permeable to the fluid include intermediate walls and/or intermediate floors (partition lid/cover – 4-3). Regarding claim 9, Umeoka teaches the limitations of claim 1, and Umeoka further teaches the boundary surfaces are rectangular (see shapes of tank units 1). Regarding claim 10, Umeoka teaches the limitations of claim 1, and Umeoka further teaches the cells have identical dimensions (see identical tank units 1). Regarding claim 12, Umeoka teaches a method for providing a thermal store (see Fig. 1-9), comprising: forming a basic framework with a three-dimensional grid having a plurality of cells (tank units 1), wherein boundary surfaces (surfaces thereof) between adjacent ones of the cells are surrounded by grid lines of the grid that are arranged at edges of the cells, at least one of the boundary surfaces between adjacent cells being permeable (see connections therebetween) to a fluid to form a flow path from cell to cell for the fluid; pre-finishing a plurality of modules (tank units 1) and/or structural elements of the basic framework; transporting the modules to an installation location (installation…small land – Page 17) of the thermal store; and arranging (assembled vertically and horizontally - Page 15) the modules adjacent to one another and/or one over another and connected to one another to form the basic framework of the thermal store. Umeoka does not teach girders which form supports in the basic framework of the thermal store and are arranged in an area of the grid lines of the grid and connected to one another in an area of grid points of the grid at the edges of the cells to form the plurality of cells. Benson teaches (see Fig. 1 & 9) girders (frame 20 including beams 22, posts 24) which form supports in the basic framework of the thermal store and are arranged in an area of the grid lines of the grid at the edges of the cells, and connected to one another in an area of grid points of the grid to form the plurality of cells. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified to include the girders of Benson, in order to provide strength and rigidity (¶[0041]). Regarding claim 13, Umeoka teaches the limitations of claim 12, and Umeoka further teaches the thermal store is filled with a thermal storage medium after connecting the modules (after connecting…heat storage material is filled - Page 15) Regarding claim 14, Umeoka teaches the limitations of claim 12, and Umeoka further teaches wherein the modules (1), floors, ceilings, outer walls, intermediate walls, and/or intermediate floors compatible with one another and used in the thermal store are prefinished in dimensions already defined before planning of the thermal store (after installation…number of heat storage tanks units 1 can be easily increased). Regarding claim 15, Umeoka teaches the limitations of claim 12, and Umeoka further teaches the boundary surfaces are rectangular and the cells are cuboid (see shaped of tank units 1). Regarding claim 16, Umeoka teaches the limitations of claim 14, and Umeoka further teaches wherein the modules (1), floors, ceilings, outer walls, intermediate walls, and/or intermediate floors are stocked prior to the planning of the thermal store (after installation…number of heat storage tanks units 1 can be easily increased – Page 15). Regarding claim 17, Umeoka teaches the limitations of claim 5, and Umeoka further teaches the boundary surfaces permeable to the fluid and abutting one another are open and wherein the filling forms a continuous bulk material and/or lining (5) uninterrupted by the open boundary surfaces. Regarding claims 18-19, Umeoka teaches the limitations of claims 1/12, and Umeoka further teaches wherein at least one of the boundary surfaces between adjacent cells is open between the adjacent cells (1, see openings therebetween). Regarding claims 20-21, Umeoka teaches the limitations of claims 1/12, and Benson further teaches as modified further teaches wherein at least one of the girders (22/24) is provided at the edges of more than one of the cells. Response to Arguments Applicant’s arguments with respect to the claim(s) have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. 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 ERIC S RUPPERT whose telephone number is (571)272-9911. The examiner can normally be reached Monday - Friday 8 am - 4 pm. 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, Len Tran can be reached at 571-272-1184. 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. /ERIC S RUPPERT/Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Show 2 earlier events
Apr 24, 2025
Response Filed
Jul 08, 2025
Final Rejection mailed — §103
Aug 28, 2025
Response after Non-Final Action
Sep 23, 2025
Request for Continued Examination
Oct 01, 2025
Response after Non-Final Action
Oct 06, 2025
Non-Final Rejection mailed — §103
Jan 30, 2026
Response Filed
Apr 01, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12638241
DOUBLE-TUBE HEAT EXCHANGER AND MANUFACTURING METHOD THEREFOR
2y 11m to grant Granted May 26, 2026
Patent 12638251
HEATING AND COOLING SYSTEM USING MECHANICAL TRANSFER OF ENCAPSULATED PHASE CHANGE MATERIALS
2y 2m to grant Granted May 26, 2026
Patent 12631406
ELECTRIC ARRANGEMENT, PANEL AND HEAT EXCHANGER
3y 7m to grant Granted May 19, 2026
Patent 12635522
ELECTRONIC COMPONENT COOLER
2y 7m to grant Granted May 19, 2026
Patent 12631399
WOUND HEAT EXCHANGER AND METHOD
2y 6m to grant Granted May 19, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

5-6
Expected OA Rounds
59%
Grant Probability
84%
With Interview (+24.7%)
2y 9m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 752 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month