Prosecution Insights
Last updated: April 19, 2026
Application No. 18/661,737

POSITIONING DOUBLE-LAYER COMB

Non-Final OA §103
Filed
May 13, 2024
Examiner
STEITZ, RACHEL RUNNING
Art Unit
3772
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Guangzhou Yilong Technology Development Co. Ltd.
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
80%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
654 granted / 1194 resolved
-15.2% vs TC avg
Strong +26% interview lift
Without
With
+25.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
62 currently pending
Career history
1256
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
46.1%
+6.1% vs TC avg
§102
26.2%
-13.8% vs TC avg
§112
20.2%
-19.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1194 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 . 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. Claim(s) 1-3 and 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bruno (FR 2,416,668) in view of Foster (US 2,241,879). Bruno discloses a positioning double-layer comb, comprising an upper comb body (1); a lower comb body (6), a pair of plug-in sockets (4a) provided on the upper comb body, wherein each of the plug-in sockets is provided therein with a plug-in hole (F); and a pair of plug-in connectors (M) provided on the lower comb body, wherein each of the plug-in connectors is provided thereon with a plug-in strip (7b), and the plug-in strip is matched with a respective plug-in hole (see Figure 1). Bruno discloses the claimed invention except for a height of the upper comb body is greater than a height of the lower comb body. Foster teaches a double comb body having a height of the upper comb body (12) is greater than a height of the lower comb body (10) (see Figure 3). It would have been obvious to one having ordinary skill in the art before the effective filing date to have the upper comb body of Bruno be of a greater height than the lower comb body as taught by Foster to allow for versatility in hair care and styling allowing a single tool to perform multiple functions for various hair types and desired results. Regarding claims 2-3 and 5, Bruno further discloses: Claim 2, a docking slot (4b) is further provided on each of the plug-in sockets, each of the plug-in holes (F) is located in a respective docking slot, and a size of the docking slot is matched with a size of the plug-in connector (M) (see Figure 1). Claim 3, at least one pair of connection members (8), wherein one end of each connection member is provided with a connection plug-in strip, and the other end of each connection body is provided with a connection slot (see Figure 4), the connection slot is provided therein with a connection receptacle; the connection plug-in strip is matched with the plug-in hole, and the connection receptacle is matched with the plug-in strip (see Figures 2-4). Claim 5, wherein an end of the upper comb body is provided with a handle (2) (see Figure 1). Claim(s) 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bruno (FR 2,416,668) in view of Foster (US 2,241,879) as applied to claims 1-3 and 5 above, and further in view of Davis (US 4,867,184). The combination of Bruno and Foster disclose the claimed invention except for the upper comb body and the lower comb body each being arch-shaped. Davis teaches a hair trimming comb body having a body that is arch-shaped (see Figures 3a, and 7a-9c). It would have been obvious to one having ordinary skill in the art before the effective filing date to have the combs of the combination of Bruno and Foster be arch shaped as taught by Davis to allow for the ability to follow the natural contour of the head, which provides ergonomic benefits, enhances styling efficiency, and improves scalp comfort. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RACHEL RUNNING STEITZ whose telephone number is (571)272-1917. The examiner can normally be reached Monday-Friday 8:00am-4:30pm EST. 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, Thomas Barrett can be reached at 571-272-4746. 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. /RACHEL R STEITZ/Primary Examiner, Art Unit 3772 11/5/2025
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Prosecution Timeline

May 13, 2024
Application Filed
Nov 07, 2025
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599215
HAIR CLIP CONVERTIBLE COMB
2y 5m to grant Granted Apr 14, 2026
Patent 12589020
CURETTE TOOL AND NAIL CARE METHOD USING SAME
2y 5m to grant Granted Mar 31, 2026
Patent 12588745
ROLLER STRUCTURE WITH ADJUSTABLE DIAMETER AND HAIR-TANGLING PREVENTION FUNCTION, AND HAIR CURLER THEREOF
2y 5m to grant Granted Mar 31, 2026
Patent 12588724
HAIR WEFT AND PREPARATION PROCESS THEREOF
2y 5m to grant Granted Mar 31, 2026
Patent 12569056
SPIRAL COSMETIC APPLICATOR WITH DOWNWARD FACING MICROCOMBS
2y 5m to grant Granted Mar 10, 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
55%
Grant Probability
80%
With Interview (+25.6%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 1194 resolved cases by this examiner. Grant probability derived from career allow rate.

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