Prosecution Insights
Last updated: April 19, 2026
Application No. 18/036,513

SPINDLE DEVICE

Non-Final OA §102
Filed
May 11, 2023
Examiner
GATES, ERIC ANDREW
Art Unit
3722
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Fanuc Corporation
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
93%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
849 granted / 1081 resolved
+8.5% vs TC avg
Moderate +14% lift
Without
With
+14.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
34 currently pending
Career history
1115
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
39.2%
-0.8% vs TC avg
§102
34.6%
-5.4% vs TC avg
§112
20.2%
-19.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1081 resolved cases

Office Action

§102
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 . DETAILED ACTION This office action is in response to Applicant’s initial application filed 11 May 2023. Priority Receipt is acknowledged of papers submitted under 35 U.S.C. 119(a)-(d), which papers have been placed of record in the file. 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 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. Claim 1 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Vigato (WO 2009/156829 A1). Regarding claim 1, Vigato discloses a spindle device 500 comprising: a spindle 100 that is formed with a through hole (not labeled, see figure 4) penetrating along an axial direction; a draw bar 10 that is provided in the through hole 14, is configured to advance and retreat with respect to one end of the spindle (against spring 19), and is formed with a flow path 4/14 communicating with the through hole along the axial direction; and a plurality of balls 6 that are movable in a radial direction of the spindle in accordance with advance and retreat of the draw bar and clamp or unclamp a pull stud C inserted into the through hole from one end of the spindle, wherein the pull stud is formed with a flange C including a projecting portion (see annotated figure below) that projects from an outer peripheral surface of the pull stud, and an inclined portion (see annotated figure below) that reduces in diameter from the projecting portion toward a distal end (right side in figure 6) of the pull stud, and the spindle device further comprises a sealing member 15 that is fixed to a wall surface (see figure 10) forming the flow path of the draw bar so as to make contact with an inclined surface of the inclined portion of the pull stud clamped by the plurality of balls (at shaped end 16a; also see page 7, lines 1-4 and page 11, lines 31-33, also see figures 5 and 10). PNG media_image1.png 381 584 media_image1.png Greyscale Allowable Subject Matter Claims 2-3 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion 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 ERIC ANDREW GATES whose telephone number is (571)272-5498. The examiner can normally be reached on M-Th 9-6, Alt Fr 9-5. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Sunil Singh, can be reached on 571-272-3460. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /ERIC A. GATES/Primary Examiner, Art Unit 3722 16 March 2026
Read full office action

Prosecution Timeline

May 11, 2023
Application Filed
Mar 16, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599972
Chuck with Slip Protection
2y 5m to grant Granted Apr 14, 2026
Patent 12594610
Four-Hole Core Drilling Machine
2y 5m to grant Granted Apr 07, 2026
Patent 12589460
PIPE THREADING MECHANISMS AND SYSTEMS
2y 5m to grant Granted Mar 31, 2026
Patent 12589443
HOLE CUTTER WITH MULTIPLE FULCRUMS
2y 5m to grant Granted Mar 31, 2026
Patent 12583038
DEVICE FOR AXIAL DISPLACEMENT OF A HOLE SAW FOR A HAND-HELD DRILL
2y 5m to grant Granted Mar 24, 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
78%
Grant Probability
93%
With Interview (+14.1%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 1081 resolved cases by this examiner. Grant probability derived from career allow rate.

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