Prosecution Insights
Last updated: August 06, 2026
Application No. 18/591,281

CHUCK FOR ACQUIRING A WARPED WORKPIECE BY AMPLIFIED SUCTION

Final Rejection §102§103
Filed
Feb 29, 2024
Priority
Mar 01, 2023 — provisional 63/449,061
Examiner
HONG, SEAHEE
Art Unit
3723
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Core Flow Ltd.
OA Round
2 (Final)
69%
Grant Probability
Favorable
3-4
OA Rounds
4m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allowance Rate
540 granted / 786 resolved
-1.3% vs TC avg
Strong +30% interview lift
Without
With
+29.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
38 currently pending
Career history
813
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
39.8%
-0.2% vs TC avg
§102
25.0%
-15.0% vs TC avg
§112
32.4%
-7.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 786 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 . 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)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (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. Claim(s) 1-11, 15 is/are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by Verstreken et al (US 2022/0130708 A1). Regarding claim 1, Verstreken et al (‘708) discloses a chuck for acquiring and holding a workpiece, the chuck comprising: a housing 20 (para[0033], fig3); one or a plurality of first compartments 24a,24b (para[0044]) disposed within the housing 20 (fig3), each first compartment 24a,24b defining a first space (fig3) and having a wall that forms a chuck surface 20a (fig3) having a plurality of vacuum ports 23a,23b (para[0044]) that are distributed on the chuck surface 20a; a second compartment 10 (para[0045]) disposed within the housing 20 (fig3) defining a second space for internally temporarily accumulating vacuum (para[0029]); and one or a plurality of conduits 25a,25b (para[0045]) fluidically connecting between the second compartment 10 and each of said one or the plurality of first compartments 24a,24b, each of said one or the plurality of conduits 25a,25b having a valve 30a,30b (para[0045]) which when opened allows flow through that conduit 25a,25b and when closed prevents flow through that conduit 25a,25b (para[0045]); wherein when a vacuum source 12 (para[0029]) is fluidically connected to the second compartment 10 and when the valve 30a,30b of each of said one or more conduits 25a,25b is closed vacuum is temporarily accumulated in the second compartment 10, such that when the valve 30a,30b of each of said one or more conduits 25a,25b is opened, the accumulated vacuum affects suction at the plurality of vacuum ports 23a,23b on the chuck surface 20a to acquire and hold the workpiece (para[0016]). Regarding claim 2¸ Verstreken et al discloses the chuck according to claim 1, further comprising a controller 34 (para[0040]), configured to close the valve 30a,30b of each of said one or more conduits 25a,25b, to cause vacuum to temporarily accumulate in the second compartment 10, and to open the valve 30a,30b of each of said one or more conduits 25a,25b to acquire and hold the workpiece on the chuck surface 20a. Regarding claim 3, Verstreken et al discloses the chuck according to claim 1, wherein said one or the plurality of first compartments 24a,24b comprises the plurality of first compartments 24a,24b. Regarding claim 4, Verstreken et al discloses the chuck according to claim 2, wherein the controller 34 is configured to separately control the valves 30a,30b of the plurality of first compartments 24a,24b. Regarding claim 5, Verstreken et al discloses the chuck according to claim 3, wherein the plurality of first compartments 24a,24b are arranged concentrically (fig2A). Regarding claim 6, Verstreken et al discloses the chuck according to claim 5, wherein the vacuum ports of the first compartments 24a,24b are arranged in concentric strips (fig2A). Regarding claim 7, Verstreken et al discloses the chuck according to claim 6, wherein at least some of the concentric strips are adjacent to one another (fig2A). Regarding claim 8, Verstreken et al discloses the chuck according to claim 6, wherein at least some of the concentric strips are separated by a gap on the chuck surface 20a (fig2A). Regarding claim 9, Verstreken et al discloses the chuck according to claim 1, wherein the second compartment 10 comprises a vacuum connection port 14 (para[0030]), for connecting to an external vacuum source (para[0030], the vacuum source 12 is an external vacuum source). Regarding claim 10, Verstreken et al discloses the chuck according to claim 1, wherein the plurality of vacuum ports 23a,23b is distributed on a peripheral zone of the chuck surface 20a (fig2B). Regarding claim 11, Verstreken et al discloses the chuck according to claim 1, wherein the plurality of vacuum ports 23a,23b is distributed on the chuck surface 20a in one or a plurality of distribution patterns (figs2A-2C). Regarding claim 15, Verstreken et al discloses the chuck according to claim 1, further comprising one or a plurality of protrusions (para[0035], “projections”) on the chuck surface 20a to prevent direct contact between the workpiece and the chuck surface 20a. Claim(s) 16 is/are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by Piper (6,024,631). Regarding claim 16, as seen in fig3, Piper (‘631) discloses a chuck (col.6 line43) for acquiring and holding a workpiece (abstract), comprising: a housing 32,51 (col.7 lines1-2, fig3) comprising: one or a plurality of first compartments 70 disposed in the housing 32,51, each first compartment 70 (fig3) defining a first space (fig3) and having a wall that forms a chuck surface 12 (fig3) having a plurality of vacuum ports 68 (col.7 line43) that are distributed on the chuck surface 12; and one or more vacuum generators 40 (col.6 line50, “vacuum pump”), disposed within the housing 32,51 (fig3), for affecting suction in said one or the plurality of first compartments 70 to cause suction at the plurality of vacuum ports 68 on the chuck surface 12 to acquire and hold the workpiece (abstract). 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. Claim(s) 12 is/are rejected under 35 U.S.C. 103 as being unpatentable over Verstreken et al (US 2022/0130708 A1). Regarding claim 12, Verstreken et al discloses the chuck according to claim 1. Verstreken et al teaches wherein said one or the plurality of first compartments 24a,24b can comprise the plurality of first compartments (fig3, para[0044]) or a single compartment 24 (para[0037]). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to use either a plurality of first compartments or a single first compartment, as taught by different embodiments, depending on how many vacuum zones a user would like on a chuck surface. Claim(s) 13-14 is/are rejected under 35 U.S.C. 103 as being unpatentable over Verstreken e al (US 2022/0130708 A1) in view of Chen et al (US 6,170,496 B1). Regarding claims 13-14, Verstreken et al discloses the chuck according to claim 1, however, does not explicitly disclose that the valve is a three-way valve. Chen et al (‘496) teaches a use of a three-way valve (col.3 lines35-44) which has multiple valve openings, each connected to each of multiple conduits and a gas supply respectively (col.3 lines35-44), the three-way valve connected to a pressure source to affect pressure force (col.4 lines5-12). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify Verstreken et al to a three-way valve, as taught by Chen et al, so that a damaged conduit out of a plurality of conduits can be replaced without breaking the vacuum flow. Claim(s) 17-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Piper (6,024,631) in view of Levin et al (US 6,644,703 B1). Regarding claim 17, Piper discloses the chuck according to claim 16, however, does not explicitly disclose that the vacuum generators are Venturi vacuum generators. Levin et al (‘703) teaches that it is known to use a plurality of Venturi vacuum generators (col.25 lines50-51, “Venturi” type of vacuum-pump) for a vacuum chuck. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify Piper to use Venturi vacuum generators as the vacuum generators, as taught by Levin et al, as Venturi vacuum generators are known types of vacuum generators for a vacuum chuck. Regarding claim 18, the combination of Piper and Levin et al teaches the chuck according to claim 17. Levin et al further teaches wherein an exhaust port (a connection) of each of the Venturi vacuum generators is connected to a vacuum source 51 (abstract) in order to provide vacuum to the vacuum generators. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the combination of Piper and Levin et al to an exhaust port to be connected to a vacuum source, as further taught by Levin et al, for the purpose of providing vacuum. Regarding claims 19-20, the combination of Piper and Levin et al teaches the chuck according to claim 17. Levin et al further teaches a controller 53 (automatic “control” valve, col.25 lines52-53) for controlling a blow of high-pressure/the operation through said one or the plurality of Venturi vacuum generators (col.25 lines51-54). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the combination of Piper and Levin et al to use a controller, as further taught by Levin et al, for the purpose of controlling the Venturi vacuum generators. Response to Arguments Applicant’s arguments with respect to pending claim(s) have been considered but are moot because of the new ground(s) of rejection. 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 Seahee Hong whose telephone number is (571)270-5778. The examiner can normally be reached M-Th 8am-4pm ET. 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, Brian Keller can be reached at (571) 272-8548. 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. /SEAHEE HONG/Primary Examiner, Art Unit 3723
Read full office action

Prosecution Timeline

Feb 29, 2024
Application Filed
Feb 25, 2026
Non-Final Rejection mailed — §102, §103
Jul 02, 2026
Response Filed
Jul 16, 2026
Final Rejection mailed — §102, §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

3-4
Expected OA Rounds
69%
Grant Probability
98%
With Interview (+29.6%)
2y 10m (~4m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 786 resolved cases by this examiner. Grant probability derived from career allowance rate.

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