Prosecution Insights
Last updated: April 19, 2026
Application No. 18/214,934

Grinder

Non-Final OA §102§103
Filed
Jun 27, 2023
Examiner
BAPTHELUS, SMITH OBERTO
Art Unit
3725
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Zhuhai Kelitong Electronic Co. Ltd.
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
3y 7m
To Grant
99%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allow Rate
200 granted / 299 resolved
-3.1% vs TC avg
Strong +42% interview lift
Without
With
+41.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
22 currently pending
Career history
321
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
44.0%
+4.0% vs TC avg
§102
18.9%
-21.1% vs TC avg
§112
34.5%
-5.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 299 resolved cases

Office Action

§102 §103
DETAILED ACTION This office action is in response to the application and claims filed on June 27, 2023. Claims 1-10 are pending, with claim 1 in independent claim form. 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 . Priority Acknowledgment is made of applicant’s claim for foreign priority under 35 U.S.C. 119 (a)-(d). The certified copy has been filed in parent Application No. CN202223148034.4 filed on 11/27/2022. Information Disclosure Statement The information disclosure statements (IDS) submitted are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Specification Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words in length. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, “The disclosure concerns,” “The disclosure defined by this invention,” “The disclosure describes,” etc. In addition, the form and legal phraseology often used in patent claims, such as “means” and “said,” should be avoided. The abstract of the disclosure is objected to because of : the language of “The present invention discloses” in line 1. Appropriate correction is required. 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. Claims 1-5 and 8-10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Tang CN Publication (102,923,626) hereinafter Tang. Regarding claim 1, Tang discloses a grinder (fig.1-2 and 4-9) comprising: an upper shell (marked as 11,16 in fig.2) having a lower end (end marked as 11a in fig.2) and an inside (space occupied by element 14 in fig.2); a lower shell (3, see fig.1, the shell better seen in fig.4) having an upper end (end marked as 32a in fig.4) connected to the lower end (end marked as 11a in fig.2) of the upper shell (see fig.1); a PCB (12-1, 13-2); a charging contact piece (12-2 and 4) having one end connected to the PCB (12-1 see fig.8) and another end protruding from and exposed on a side of the upper shell (16 of 11,16, see fig.2); and a battery (15) connected to the PCB (12-1, 13-2). Examiner notes, All components of the grinder are connected as a whole, see fig.1 of reference Tang. Regarding claim 2, Tang further discloses wherein the upper shell (marked as 11,16 in fig.2) comprises an inner left shell, an inner right shell (see fig.2), and an upper bottom cap (fig.2 shown the cap since the function of the cap is to cover, the structure discloses in the picture, covers and interconnect element 1 with element 3, see fig.1 hereinafter C); PNG media_image1.png 565 496 media_image1.png Greyscale wherein the battery (15) and the PCB (12-1, 13-2) are built in and connected to one of the inner left shell and the inner right shell (see fig.2); wherein the another end of the charging contact piece (12-2 of 12-2 and 4) protrudes from and is exposed on the side of one of the inner left shell and the inner right shell (see fig.2); wherein an upper end of the upper bottom cap is connected to the inner left shell and the inner right shell (see fig.2); and wherein a lower end of the upper bottom cap is connected to the upper end of the lower shell (3, see fig.1). Regarding claim 3, Tang further discloses wherein the lower shell (3) comprises: a feed bin (32); a limit bulge (32a) provided on an outer side of an upper end of the feed bin (3, see fig.4); a limit groove (11a) having a first end and a second end (see fig 2) provided inside the lower end of the upper bottom cap (see fig.2); wherein the first end of the limit groove (11a) bends down and opens (see fig 2); wherein the second end of the limit groove (11a) extends circumferentially inside the lower end of the bottom cap (see fig 2); and wherein the limit bulge (32a) and the limit groove (11a) are connected in a matched manner (see pag.4 lines 20-25). Regarding claim 4, Tang further discloses a driving shaft (34); and a snap spring (37); wherein the lower shell (3) further comprises a bracket (36) connected to the lower end of the feed bin (32, see fig.4); PNG media_image2.png 461 559 media_image2.png Greyscale wherein the snap spring (37) is connected to a middle of the driving shaft (34); wherein the driving shaft (34) passes through a middle fixing hole of the bracket (36); and wherein the snap spring (37) abuts against the middle fixing hole of the bracket (36, see fig.4). Examiner notes, this arrangement is inherent with cone grinder. Regarding claim 5, Tang further discloses a male grinding head (39); and a female grinding head (38); wherein the lower shell (3) further comprises a lower bottom cap (31); wherein the upper end of the lower bottom cap (31) is connected to a lower end of the bracket (36); wherein the male grinding head (39) is connected to the lower end of the driving shaft (34); wherein the female grinding head (38) is connected inside the lower bottom cap (31); and wherein the male grinding head (39) is located inside the female grinding head (38). Examiner notes, All components of the grinder are connected as a whole, see fig.1 of reference Tang. Regarding claim 8, Tang further discloses wherein the PCB (12-1, 13-2) further comprises: a master PCB (13-2); and a charging PCB (12-1); wherein the battery (15) is electrically connected to the master PCB (13-2) or the charging PCB (12-1); and wherein one end of the charging contact piece (12-2 of 12-2 and 4) is electrically connected to the charging PCB (12-1. See pag.4 lines 46-48 and pag.5 lines 1-2). Examiner notes, All electronic components of the grinder are connected as a whole to allow distribution of current. Regarding claim 9, Tang further discloses a motor (14) connected inside the upper shell and electrically connected to the PCB (12-1, 13-2). Examiner notes, All electronic components of the grinder are connected as a whole to allow distribution of current. Regarding claim 10, Tang further discloses wherein the charging contact piece (12-2 and 4) is a flexible charging cable (42, see fig.1). 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 6- 7 are rejected under 35 U.S.C. 103 as being unpatentable over Tang CN Publication (102,923,626) hereinafter Tang in view of Hong US Patent (7,207,511) hereinafter Hong. Regarding claim 6, The prior art Tang discloses all limitation of claim 5, Tang is silent about a fool-proof bulge inside the lower end of the lower bottom cap. Tang and Hong disclose both art in the same field of endeavor of the claimed invention (i.e. grinder). PNG media_image3.png 313 484 media_image3.png Greyscale Hong, in a similar art, teaches a grinder (fig.1-14) with a fool-proof bulge (see fig.9) inside the lower end of the lower bottom cap (420, fig. 9). Hong teaches the fool-proof bulge to facilitate the grinding adjustment size of the material (see Col.1 lines 10-12), therefore it would have been obvious to the skilled artisan before the effective filing date to construct the grinder of Tang with a fool-proof bulge as taught by Hong, as it would be beneficiary to Tang to be able to facilitate the grinding adjustment size of the material and render the apparatus more efficient. Regarding claim 7, The prior art Tang discloses all limitation of claim 5, Tang is silent about wherein the lower shell further comprises a lower casing; and wherein the lower casing fits over the outside of the lower bottom cap. Hong, in a similar art, teaches a grinder (fig.1-14) with a lower shell (400) to comprise a lower casing (410); and wherein the lower casing (410) fits over the outside of the lower bottom cap (420, fig. 8). Hong teaches the lower casing and to fit over the outside of the lower bottom cap to facilitate the grinding adjustment size of the material (see Col.1 lines 10-12), therefore it would have been obvious to the skilled artisan before the effective filing date to construct the grinder of Tang with a lower casing and to fit over the outside of the lower bottom cap as taught by Hong, as it would be beneficiary to Tang to be able to facilitate the grinding adjustment size of the material and render the apparatus more efficient. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Smith O. BAPTHELUS whose telephone number is (571)272-5976. The examiner can normally be reached Mon - Fri 9:00-6:00. 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, Christopher L. Templeton can be reached at (571)270 1477. 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. February 19, 2026 /BSO/Examiner, Art Unit 3725 /Christopher L Templeton/Supervisory Patent Examiner, Art Unit 3725
Read full office action

Prosecution Timeline

Jun 27, 2023
Application Filed
Feb 19, 2026
Non-Final Rejection — §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

1-2
Expected OA Rounds
67%
Grant Probability
99%
With Interview (+41.5%)
3y 7m
Median Time to Grant
Low
PTA Risk
Based on 299 resolved cases by this examiner. Grant probability derived from career allow rate.

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