Prosecution Insights
Last updated: October 04, 2026
Application No. 18/436,285

PROSTHETIC HAND

Final Rejection §102§103
Filed
Feb 08, 2024
Priority
Jun 08, 2018 — GB 1809492.0 +2 more
Examiner
WILLSE, DAVID H
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Epic Inventing Inc.
OA Round
4 (Final)
67%
Grant Probability
Favorable
5-6
OA Rounds
1y 2m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
398 granted / 591 resolved
-2.7% vs TC avg
Moderate +14% lift
Without
With
+13.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
40 currently pending
Career history
628
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
38.1%
-1.9% vs TC avg
§102
32.6%
-7.4% vs TC avg
§112
18.9%
-21.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 591 resolved cases

Office Action

§102 §103
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 . Specification In the Amendments to the Specification of June 11, 2026, the second paragraph to be amended begins at page 6, line 29, rather than at page 6, line 2, as indicated by the corrected page attached to the instant Office action. Claim Rejections - 35 USC § 102 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. Claims 1-2, 5-6, and 9-11 are rejected under 35 U.S.C. 102(a)(1) as being clearly anticipated by Bai, CN107901060 A. Figures 17-20, for instance, illustrate an anchor portion 18 and/or 19 (Figures 21-22), a base portion 9, 16; an elongate digit 5 and optionally 6; a first portion 13 of a pivot connection mounted on base portion 9, 16; a second portion 12 of a pivot connection mounted on a proximal end of digit 5 and connected to first portion 13 via component 10; and a linear actuator 1-4, 11 having a first portion (motor 1 and rod 2) contained within and secured to (via shafts 7-8 and 11-13) elongate digit 5 for movement therewith and a second portion (nut 4 and shaft 11) remote therefrom, axially movable relative thereto (via screw 3), acting against base portion 9, 16, and being operable with pivot connection (10, 12, 13) to thereby cause pivotal movement of digit 5 around said pivot connection upon axial movement of second portion 4, 11 relative to first portion 1, 2 of linear actuator 1-4, 11 [machine translation: pages 9-12, notably page 10, last full paragraph (“the screw 3 pulls and pushes the first motor 1 to axial movement; the first motor 1 pulls and pushes the first rod 2 for axial movement”); paragraph bridging pages 1 and 2; page 2, large middle paragraph; page 6; note: in the attached copy, the cited passages are shifted downwardly to some extent relative to the pdf version used by the examiner)]. Regarding claim 2, the second portion 4, 11 of the linear actuator includes outwardly extending transfer pivot pins 11 received by apertures in base portion 9, 16 (Figures 18, 20; page 10, last full paragraph). Regarding claims 5-6, longitudinal rotation axis 20 of base portion 9, 16 extends transversely between proximal and distal sides, with base portion 9, 16 mounted to anchor portion 19 via housing 18 and worm 15 bearing against worm wheel 16 of said base portion and actuated by electric motor 17 (Figures 17-21; abstract; page 7, last full paragraph; page 8, first full paragraph; paragraph bridging pages 9 and 10). Regarding claim 9, digit 5 (and optionally 6) may comprise a thumb (page 12, first full paragraph; page 5, third full paragraph). Regarding claim 10, anchor portion in this case corresponds to housing 18, which is mounted on palm portion 19 (Figures 21-22; page 7, last full paragraph; page 8, first full paragraph). Regarding claim 11, the prosthetic device may include a plurality of such prosthetic digits (Figure 21; page 12, first, third, and fourth full paragraphs; paragraph bridging pages 1 and 2). 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. Claims 3 and 12-16 are rejected under 35 U.S.C. 103 as being unpatentable over Bai, CN107901060 A. Regarding claim 3, under an alternative interpretation, digit 5 further comprises component 10, which may be Y-shaped as well as arc-shaped (Figures 5-12, 17-19; page 6, third paragraph): digit 5, 10 second portions (at Y-shaped sides of component 10) extending into respective first portions 13 at first and second (opposite) sides of base portion 9, 16 would have been obvious in order to securely engage digit component or pull rod 10 to the first portion or rotating shaft 13, with the ordinary practitioner having been left to devise specific details as to the mechanical fixation between components 10 and 13. Regarding claims 12-15, controllers with load sensor feedback were common in the art at the effective filing date of the present invention and would have been obvious in order to provide an “automatic operating device” that maintains forces or loads under pivotal and rotational movements of digits within sufficient but safe ranges for “disabled” or “handicapped” individuals and to avoid breaking objects to be grabbed or carried (paragraph bridging pages 1 and 2). Regarding claim 16, motor bracket or housing 18 being hollow with an internal aperture capable of receiving power and actuation connections or wiring would have been obvious in order to power and control electric motors 1 and 17. Allowable Subject Matter Claims 4, 7-8, and 17 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. Response to Arguments Applicant’s comments have been considered but are deemed moot in view of the new grounds of rejection. Conclusion Applicant’s amendment necessitated the new grounds of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL (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 David H. Willse, whose telephone number is 571-272-4762. The examiner can normally be reached on Monday through Thursday. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor Melanie Tyson can be reached at telephone number 571-272-9062. 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://portal.uspto.gov/external/portal. Should you have questions about access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). 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. /DAVID H WILLSE/ Primary Examiner, Art Unit 3774
Read full office action

Prosecution Timeline

Show 2 earlier events
Jul 23, 2025
Response Filed
Oct 22, 2025
Final Rejection mailed — §102, §103
Dec 22, 2025
Response after Non-Final Action
Jan 20, 2026
Request for Continued Examination
Feb 18, 2026
Response after Non-Final Action
Mar 11, 2026
Non-Final Rejection mailed — §102, §103
Jun 11, 2026
Response Filed
Aug 18, 2026
Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
67%
Grant Probability
81%
With Interview (+13.7%)
3y 10m (~1y 2m remaining)
Median Time to Grant
High
PTA Risk
Based on 591 resolved cases by this examiner. Grant probability derived from career allowance rate.

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