Prosecution Insights
Last updated: July 17, 2026
Application No. 18/978,895

POWER TOOL AND OPERATING METHOD THEREFOR

Non-Final OA §103
Filed
Dec 12, 2024
Priority
Feb 07, 2024 — CN 202410176718.X +3 more
Examiner
FRY, PATRICK B
Art Unit
3731
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Nanjing Chervon Industry Co., Ltd.
OA Round
2 (Non-Final)
54%
Grant Probability
Moderate
2-3
OA Rounds
1y 11m
Est. Remaining
61%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allowance Rate
237 granted / 443 resolved
-16.5% vs TC avg
Moderate +8% lift
Without
With
+7.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
39 currently pending
Career history
491
Total Applications
across all art units

Statute-Specific Performance

§103
85.3%
+45.3% vs TC avg
§102
9.4%
-30.6% vs TC avg
§112
4.4%
-35.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 443 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 . This Office Action is in response to the applicant’s amendment filing on 03/13/2026. Applicant’s cancelation of claims 9, 11, and 14 is acknowledged and require no further examining. Claims 1-8, 10, 12-13, and 15-20 are pending and examined below. Upon further consideration, a new ground(s) of rejection is made in view of the reference Nalley (4,204,580). Due to the introduction of new rejection(s), this action is made NON-FINAL. Priority Receipt is acknowledged of certified copies of 202410176718.X and 202420321071.0 applications required by 37 CFR 1.55. Acknowledgement is made of applicant's claim for foreign priority based on an application filed in CN on 02/28/2024. It is noted, however, that applicant has not filed a certified copy of the 202440373296.0 and 202420366622.5 application as required by 37 CFR 1.55. Drawings The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the following features must be shown or the feature(s) canceled from the claim(s). No new matter should be entered. The protrusion as stated in claim 4; The groove as stated in claim 4; The forward rotation circuit as stated in claim 12; The controller as stated in claim 12; The forward rotation trigger element as stated in claim 13; and The reverse rotation trigger as stated in claim 15. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. 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 1-4, 6-7, 10, and 16-20 are rejected under 35 U.S.C. 103 as being unpatentable over reference Nalley (4,204,580) in view of reference Kannan et al. (10,014,128). Regarding claim 1, Nalley disclose a power tool (10) comprising: a housing (12) an electric motor (14) disposed at least partially in the housing (12); wherein the electric motor (14) comprises a rotating shaft (15) rotatable about a first axis; a switch assembly (30) movable between a startup position and a shutdown position, wherein the switch assembly (30) sends a startup signal to the electric motor (14) in the startup position and sends a shutdown signal to the electric motor (14) in the shutdown position; and a directional assembly (34) for a user to operate to control a rotation direction of the electric motor (14), wherein the directional assembly (34) is switchable to a forward rotation position or a reverse rotation position, wherein, when the directional assembly (34) is switched to the forward rotation position and the switch assembly (30) is at the startup position, the electric motor (14) keeps rotating forward, and wherein, when the directional assembly (34) is switched to the reverse rotation position and the switch assembly (30) is at the startup position, the electric motor (14) keeps rotating reversely. (Figure 1, 6 and Column 1 lines 48-52, 60-64, Column 3 lines 10-22) However, Nalley does not disclose the directional assembly locks the switch assembly in the startup position. Kannan et al. disclose an operation method for a power tool, wherein the power tool comprises: a switch assembly (8) movable between startup position (Figure 9) and a shutdown position (Figure 7A); and a lock assembly (3), wherein the method comprises the step of: operating the lock assembly to unlock the switch assembly (8) when the lock assembly (3) is mated with the switch assembly (8) to lock the switch assembly (8) at the startup position (Figure 9), whereupon the switch assembly (8) switches to the shutdown position (Figure 7A). (Figures 7A, 9 and Column 3 lines 11-14, Column 4 lines 46-56, Column 6 lines 37-46, 51-57) It would have been obvious to the person of ordinary skill in the art, before the effective filing date of the applicant’s claimed invention, to have modified the switch assembly of Nalley by incorporating the function of locking the switch assembly at the startup position as taught by Kannan et al., since column 2 lines 51-54 of Kannan et al. states such a modification would allow the power tool to operate continuously without the user maintain pressure on the switch assembly. Regarding claim 2, Nalley modified by Kannan et al. disclose the directional assembly (Nalley – 34) comprises: a directional member (Nalley – 36); and a first stop portion (Nalley – 102) disposed on the directional member (Nalley – 36), wherein the switch assembly (Nalley – 30) comprises: a trigger (Nalley – 32); and a second stop portion (Kannan et al. – 25) disposed on the trigger (Nalley – 32), and wherein the first stop portion (Nalley – 102) and the second stop portion (Kannan et al. – 25) mate with each other so that the directional member (Nalley – 36) locks the trigger (Nalley – 32) at the startup position. (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 51-57) Regarding claim 3, Nalley modified by Kannan et al. disclose the directional member (Nalley – 36) is disposed in the housing (Nalley – 12) and rotatable relative to the housing (Nalley – 12). (Nalley – Figure 6 and Column 3 lines 5-8) Regarding claim 4, Nalley modified by Kannan et al. disclose the first stop portion (Nalley – 102) is a protrusion disposed on the directional member (Nalley – 36) and extending toward the trigger (Nalley – 32), wherein the second stop portion (Kannan et al. – 25) is a groove disposed on the trigger (Nalley – 32) and open toward the directional member (Nalley – 36), and when the trigger (Nalley – 32) is at the startup position and the protrusion is inserted into the groove, the directional member (Nalley – 36) locks the trigger (Nalley – 32) at the startup position. (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 51-57) Regarding claim 6, Nalley modified by Kannan et al. disclose directional member (Nalley – 36) is disposed above the trigger (Nalley – 32) and switchable between the forward rotation position, the reverse rotation position, and a locking position, wherein, when the directional member (Nalley – 36) is at the locking position, the protrusion is inserted into the groove, and wherein, when the directional member (Nalley – 36) is at the forward rotation position and the reverse rotation position, the protrusion is removed from the groove. (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 47-57) Regarding claim 7, Nalley modified by Kannan et al. disclose, when the directional member (Nalley – 36) is at the forward rotation position and the reverse rotation position, the directional member (Nalley – 36) unlocks the trigger (Nalley – 32). (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 47-50) Regarding claim 10, Nalley modified by Kannan et al. disclose the forward rotation position and the reverse rotation position are located on left and right sides of the locking position respectively, wherein the trigger (Nalley – 32) is provided with a slide slot (Nalley – 96, 98) on each of left and right sides of the groove, wherein the left and right sides of the grooves each communicate with a corresponding slide slot (Nalley – 96, 98), and wherein, when the directional member (Nalley – 36) is at the forward rotation position and the reverse rotation position, the protrusion is slidable in the corresponding slide slot (Nalley – 96, 98). (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 47-57) Regarding claim 16, Nalley disclose an operating method for a power tool (10) comprising: an electric motor (14); a switch assembly (30) movable between a startup position and a shutdown position, wherein the switch assembly (30) sends a startup signal to the electric motor (14) in the startup position, and wherein the switch assembly (30) sends a shutdown signal to the electric motor (14) in the shutdown position; and a directional assembly (34) for a user to operate to control a rotation direction of the electric motor (14), wherein the directional assembly (34) is switchable to a forward rotation position or a reverse rotation position, and wherein the operating method comprises the steps of: operating the directional assembly (34) to switch to the forward rotation position or reverse rotation position. (Figure 1, 6 and Column 1 lines 48-52, 60-64, Column 3 lines 10-22) However, Nalley does not disclose the directional assembly locks the switch assembly in the startup position. Kannan et al. disclose an operation method for a power tool, wherein the power tool comprises: a switch assembly (8) movable between startup position (Figure 9) and a shutdown position (Figure 7A); and a lock assembly (3), wherein the method comprises the step of: operating the lock assembly to unlock the switch assembly (8) when the lock assembly (3) is mated with the switch assembly (8) to lock the switch assembly (8) at the startup position (Figure 9), whereupon the switch assembly (8) switches to the shutdown position (Figure 7A). (Figures 7A, 9 and Column 3 lines 11-14, Column 4 lines 46-56, Column 6 lines 37-46, 51-57) It would have been obvious to the person of ordinary skill in the art, before the effective filing date of the applicant’s claimed invention, to have modified the switch assembly of Nalley by incorporating the function of locking the switch assembly at the startup position as taught by Kannan et al., since column 2 lines 51-54 of Kannan et al. states such a modification would allow the power tool to operate continuously without the user maintain pressure on the switch assembly. Regarding claim 17, Nalley modified by Kannan et al. disclose the directional assembly (Nalley – 34) comprises: a directional member (Nalley – 36); and a first stop portion (Nalley – 102) disposed on the directional member (Nalley – 36), wherein the switch assembly (Nalley – 30) comprises: a trigger (Nalley – 32); and a second stop portion (Kannan et al. – 25) disposed on the trigger (Nalley – 32), and wherein, when switch assembly (Nalley – 30) is locked at the startup position, the first stop portion (Nalley – 102) and the second stop portion (Kannan et al. – 25) mate with each other. (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 51-57) Regarding claim 18, Nalley modified by Kannan et al. disclose the first stop portion (Nalley – 102) comprises a protrusion disposed on the directional member (Nalley – 36) and extending toward the trigger (Nalley – 32), wherein the second stop portion (Kannan et al. – 25) comprises a groove disposed on the trigger (Nalley – 32) and open toward the directional member (Nalley – 36). (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 51-57) Regarding claim 19, Nalley modified by Kannan et al. disclose, when the switch assembly (Nalley – 30) is locked at the startup position, the protrusion is operated to be inserted into the groove. (Kannan et al. – Column 6 lines 51-57) Regarding claim 20, Nalley modified by Kannan et al. disclose the trigger (Nalley – 32) is provided with a slide slot (Nalley – 96, 98) on each of left and right sides of the groove, wherein the left and right sides of the grooves each communicate with a corresponding slide slot (Nalley – 96, 98), and wherein, when the directional member (Nalley – 36) unlocks the switch assembly (Nalley – 30), the protrusion is operated to move into the slide slot (Nalley – 96, 98). (Nalley – Column 3 lines 23-29) (Kannan et al. – Column 6 lines 47-57) Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over reference Nalley (4,204,580) in view of reference Kannan et al. (10,014,128) as applied to claim 4 above, and further in view of reference Lam et al. (7,210,542). Regarding claim 5, Nalley modified by Kannan et al. disclose the claimed invention as stated above but do not disclose an arc-shaped surface. Lam et al. disclose a device comprising: a switch assembly (11, 21, 29) movable between a startup position (Figure 5) and a shutdown position (Figure 2); and a lock assembly (13, 22, 26), wherein the lock assembly (13, 22, 26) includes a protrusion (22) that mates with an abutment (21) of the switch assembly (11, 21, 29), wherein the lock assembly (13, 22, 26) is configured to lock the switch assembly (11, 21, 29) at the shutdown position (Figure 2) when the protrusion (22) of the directional assembly (13, 22, 26) mates with the abutment (21) of the switch assembly (11, 21, 29), and wherein the surface abutting against the protrusion (22) is an arc-shaped surface. (Figures 1-2, 4-5 and Column 1 lines 17-19, Column 2 lines 37-41, 44-56) It would have been obvious to the person of ordinary skill in the art, before the effective filing date of the applicant’s claimed invention, to have modified the groove of Kannan et al. to comprise an arc-shaped surface as taught by Lam et al., since column 1 lines 20-23 of Lam et al. states such a modification would ensure protrusion stays engaged with the abutment. Claim 8 is rejected under 35 U.S.C. 103 as being unpatentable over reference Nalley (4,204,580) in view of reference Kannan et al. (10,014,128) as applied to claim 7 above, and further in view of reference Nishikimi et al. (8,759,696). Regarding claim 8, Nalley modified by Kannan et al. disclose the claimed invention as stated above but do not disclose an elastic member. Nishikimi et al. disclose a switch assembly comprising: a housing (11); a trigger (14) movable between startup position and a shutdown position; an elastic member (23) disposed between the trigger (14) and the housing (11); and a dust shield (15) sleeved on an outer circumference of the elastic member (23), wherein elastic member (23) causes the trigger (14) to move to the shutdown position. (Figures 4-5 and Column 5 lines 1-9, Column 6 lines 6-14) It would have been obvious to the person of ordinary skill in the art, before the effective filing date of the applicant’s claimed invention, to have modified the switch assembly of Nalley by incorporated the elastic member and dust shield as taught by Nishikimi et al., since column 1 lines 24-30 and column 7 lines 45-49 of Nishikimi et al. state such a modification would ensure the trigger is constantly urged to the shutdown position while maintaining a superior dustproof properties and waterproof properties. Claims 12-13 and 15 are rejected under 35 U.S.C. 103 as being unpatentable over reference Nalley (4,204,580) in view of reference Kannan et al. (10,014,128) as applied to claim 2 above, and further in view of reference Wong et al. (11,623,335). Regarding claim 12, Nalley modified by Kannan et al. disclose the claimed invention as stated above but do not disclose a forward rotation circuit. Wong et al. disclose a directional assembly comprising: directional member (13); a forward rotation circuit (11A); a reverse rotation circuit (11B); a forward rotation trigger element (9A); a reverse rotation trigger element (9A); and a controller (11), wherein the forward and reverse trigger elements (9A) send a signal to the controller (11), and wherein the controller (11) controls the rotation of a motor (10) based on the signal from the forward and reverse trigger elements (9A). (Figure 1B and Column 6 lines 38-67, Column 7 lines 1-16) It would have been obvious to the person of ordinary skill in the art, before the effective filing date of the applicant’s claimed invention, to have modified the directional assembly of Nalley by incorporating the rotation circuit, trigger elements, and controller as taught by Wong et al., since column 1 lines 41-44 of Wong et al. states such a modification would help prevent wear and tear on the directional assembly. Regarding claim 13, Nalley modified by Kannan et al. and Wong et al. disclose a forward rotation trigger element (Wong et al. – 9A), wherein the forward rotation trigger element (Wong et al. – 9A) is triggered when the directional member (Nalley – 36) moves to the forward rotation position, and wherein, after triggered, the forward rotation trigger element (Wong et al. – 9A) sends a forward rotation signal to a controller (Wong et al. – 11) of the power tool (Nalley – 10), and the controller (Wong et al. – 11) controls the forward rotation circuit (Wong et al. – 11A) to be connected and keeps the forward rotation circuit (Wong et al. – 11A) connected. (Wong et al. – Column 6 lines 51-64, Column 7 lines 2-9) Regarding claim 15, Nalley modified by Kannan et al. and Wong et al. disclose a reverse rotation trigger element (Wong et al. – 9A), wherein the reverse rotation trigger element (Wong et al. – 9A) is triggered when the directional member (Nalley – 36) moves to the reverse rotation position, and wherein, after triggered, the reverse rotation trigger element (Wong et al. – 9A) sends a reverse rotation signal to a controller (Wong et al. – 11) of the power tool (Nalley – 10), and the controller (Wong et al. – 11) controls the reverse rotation circuit (Wong et al. – 11B) to be connected and keeps the reverse rotation circuit (Wong et al. – 11B) connected. (Wong et al. – Column 6 lines 51-64, Column 7 lines 9-16) Response to Arguments The Amendments filed on 03/13/2026 have been entered. Applicant’s cancelation of claims 9, 11, and 14 is acknowledged and require no further examining. Claims 1-8, 10, 12-13, and 15-20 are pending in the application. In response to the arguments of the objections towards the drawings, Examiner finds the arguments not persuasive. Applicant states: The applicants note that, as outlined in MPEP 608.02 Drawing [R-07.2015], the statutory requirement for showing the claimed invention only requires that the "applicant shall furnish a drawing where necessary for the understanding of the subject matter to be patented..." (See 35 U.S.C. 113, See also 37 CFR §1.81(a), which states "[t]he applicant for a patent is required to furnish a drawing of the invention where necessary for the understanding of the subject matter sought to be patented..."; emphasis added). While not all features are required to be shown in the drawings, all claimed features must be shown in the drawings. “The drawing in a nonprovisional application must show every feature of the invention specified in the claims.” (emphasis added) [MPEP 608.02(d)] Therefore, since the claims disclose specific features, the drawings must show said features. In response to the arguments of the objections towards the claims, in view of the amendments to the claims, Examiner withdraws the claim objections. In response to the arguments of the rejections under 35 U.S.C. 112(b), in view of the amendments to the claims, Examiner withdraws the 112(b) rejections. In response to the arguments of the rejections under 35 U.S.C. 103 with reference Lam et al. (7,210,542) in view of reference Kannan et al. (10,014,128), in view of the arguments, Examiner withdraws the 103 rejections. However, upon further consideration, a new ground(s) of rejection is made in view of reference Nalley (4,204,580) modified by reference Kannan et al. (10,014,128). Due to the introduction of new rejection(s), this action is made NON-FINAL. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to PATRICK B FRY whose telephone number is (571)272-0396. The examiner can normally be reached on Mon-Thur 7am-4pm. 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, Shelley Self can be reached at (571) 272-4524. 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. /PATRICK B FRY/Examiner, Art Unit 3731 May 27, 2026 /SHELLEY M SELF/Supervisory Patent Examiner, Art Unit 3731
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Prosecution Timeline

Dec 12, 2024
Application Filed
Dec 11, 2025
Non-Final Rejection mailed — §103
Feb 26, 2026
Response Filed
Jun 04, 2026
Non-Final Rejection mailed — §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

2-3
Expected OA Rounds
54%
Grant Probability
61%
With Interview (+7.9%)
3y 6m (~1y 11m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 443 resolved cases by this examiner. Grant probability derived from career allowance rate.

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