Prosecution Insights
Last updated: April 19, 2026
Application No. 18/926,082

EYELASH EXTENSION SYSTEM AND METHODS

Non-Final OA §102§103
Filed
Oct 24, 2024
Examiner
STEITZ, RACHEL RUNNING
Art Unit
3772
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Lash Opco LLC Dba Performance Beauty Group
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

§102 §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 § 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. Claim(s) 21-23 and 33-36 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Lotti (WO 2018/119034). Lotti discloses an applicator comprising a first arm (502); a second arm (502b) connected to the first arm at a base (504); wherein the first arm comprises a first distal tip opposite the base and the second arm comprises a second distal tip opposite the base; wherein the first distal tip and the second distal tip (506) are biased away from one another; wherein the first arm comprises a first grip portion between the base and the first distal tip; a first bottom concave portion on an underside of the first arm and positioned between the first grip portion and the first distal tip; a first knuckle formed on a top side of the first arm at a first position opposite the first bottom concave portion; a first top concave portion formed on the top side of the first arm and extending from the first knuckle to a second position between the first knuckle and the base; a second top concave portion formed on the top side of the first arm and extending from the first knuckle to the first distal tip; and a first planar inner surface extending from the first distal tip to an intersection of the first arm and the second arm at the base; and wherein the second arm comprises: a second grip portion between the base and the second distal tip; a second bottom concave portion on an underside of the second arm and positioned between the second grip portion and the second distal tip; a second knuckle formed on a top side of the second arm at a third position opposite the second bottom concave portion; a third top concave portion formed on the top side of the second arm and extending from the second knuckle to a fourth position between the second knuckle and the base; a fourth top concave portion formed on the top side of the second arm and extending from the second knuckle to the second distal tip; and a second planar inner surface extending from the second distal tip to the intersection of the first arm and the second arm at the base. (see Figure below). PNG media_image1.png 962 1107 media_image1.png Greyscale Claim 22, the second position (510) is between the first knuckle and the first grip portion and wherein the fourth position (510) is between the second knuckle and the second grip portion (see Figure 5a). Claim 23, the first grip portion is flat on the top of the first arm and on the underside of the first arm and wherein the second grip portion is flat on the top of the second arm and on the underside of the second arm (see Figure 5A). Claim 33, the first grip portion and the second grip portion each comprise grooves on outer surfaces thereof (paragraph 46). Claim 34, the system comprising a plurality of eyelash extensions (Figure 2); and the applicator of claim 21, wherein the applicator is configured to grip the eyelash extensions and position the eyelash extensions on natural lashes (Figure 6a). Claim 35, further comprising a polymer-based adhesive configured to bind the plurality of eyelash extensions to the natural lashes, wherein the adhesive is water insoluble; and an oil-based remover, wherein the polymer-based adhesive is soluble in the oil-based remover (paragraphs 30-32). Claim 36, a method of applying artificial eyelashes to natural lashes of a user, comprising: applying adhesive to an upper surface of the artificial eyelashes and/or an underside of the natural lashes; grasping the artificial eyelashes between the first planar inner surface and the second planar inner surface of the applicator of claim 21; and using the applicator, contacting the upper surface of artificial eyelashes with the underside of the natural lashes to attach the artificial eyelashes to the natural lashes via the first adhesive (paragraph 19-20, 29, 39). 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) 24-26 and 37-39 is/are rejected under 35 U.S.C. 103 as being unpatentable over Lotti (WO 2018/119034) in view of Ross (US 2009/0131977). Lotti discloses the claimed invention except for a tool affixed to the proximal end of the base wherein the tool comprises a comb having a plurality of teeth extending toward an underside of the applicator. Ross discloses an applicator (10) wherein the applicator is used for hair care and comprises a tool (20) affixed to the proximal end of the base (26) wherein the tool comprises a comb (16) having a plurality of teeth extending toward an underside of the applicator (paragraph 19). It would have been obvious to one having ordinary skill in the art before the effective filing date to have the applicator of Lotti be made with a removable tool such as a comb as taught by Ross to further aid in hair care maintenance. Claim(s) 24, 27-29, and 40 is/are rejected under 35 U.S.C. 103 as being unpatentable over Lotti (WO 2018/119034) in view of Lim (US 2013/0199556). Lotti discloses the claimed invention except for a tool affixed to the proximal end of the base wherein the tool comprises a silicone pusher, having a tapered end opposite the proximal end of the base wherein the tapered end tapers from an underside of the silicone pusher towards a top of the silicone pusher. Lim discloses an applicator (120) wherein the applicator is used for hair care and comprises a tool (112) affixed to the proximal end of the base wherein the tool comprises a rubber pusher (Figure 2b; paragraph 23) having a tapered end (104) opposite the proximal end of the base wherein the tapered end tapers from an underside of the silicone pusher towards a top of the silicone pusher (see Figure 2b)). It would have been obvious to one having ordinary skill in the art before the effective filing date to have the applicator of Lotti be made with a removable tool such as a rubber pusher as taught by Lim to further aid in hair care maintenance. It further would have been obvious to one having ordinary skill in the art before the effective filing date to have the rubber be silicone, since it has been held to be within the general skill of a worker in the art to select a known material on the basis of its suitability for the intended use as a matter of obvious design choice. Claim(s) 30-32 is/are rejected under 35 U.S.C. 103 as being unpatentable over Lotti (WO 2018/119034) in view of Lotti et al. (US D814,107). Lotti discloses the claimed invention except for wherein the first grip portion comprises a first outer surface opposite the first planar inner surface; wherein the first outer surface comprises a first planar middle portion, a first rounded portion between the first planar middle portion and the top of the first arm, and a second rounded portion between the first planar middle portion and the underside of the first arm; wherein the second grip portion comprises a second outer surface opposite the second planar inner surface; and wherein the second outer surface comprises a second planar middle portion, a third rounded portion between the second planar middle portion and the top of the second arm, and a fourth rounded portion between the second planar middle portion and the underside of the second arm. Lotti et al. teaches essentially the claimed invention but has views in Figures 6 and 7 that teach the first grip portion comprises a first outer surface opposite the first planar inner surface; wherein the first outer surface comprises a first planar middle portion, a first rounded portion between the first planar middle portion and the top of the first arm, and a second rounded portion between the first planar middle portion and the underside of the first arm; wherein the second grip portion comprises a second outer surface opposite the second planar inner surface; and wherein the second outer surface comprises a second planar middle portion, a third rounded portion between the second planar middle portion and the top of the second arm, and a fourth rounded portion between the second planar middle portion and the underside of the second arm (see Figure below). PNG media_image2.png 514 588 media_image2.png Greyscale It would have been obvious to one having ordinary skill in the art before the effective filing date to have the first and second grip portions of Lotti ‘034 be made with rounded portions as taught by Lotti ‘107 to allow for a more ergonomical hold. Regarding claim 31, Lotti ‘034; discloses the applicator comprises a third outer surface opposite the first planar surface at the second top concave portion, the third outer surface being concave from the top of the first arm to the underside of the first arm; and wherein the applicator comprises a fourth outer surface opposite the second planar surface at the fourth top concave portion, the fourth outer surface being concave from the top of the second arm to the underside of the second arm. the applicator comprises a third outer surface opposite the first planar surface at the second top concave portion, the third outer surface being concave from the top of the first arm to the underside of the first arm; and wherein the applicator comprises a fourth outer surface opposite the second planar surface at the fourth top concave portion, the fourth outer surface being concave from the top of the second arm to the underside of the second arm (see Figure below). PNG media_image3.png 414 385 media_image3.png Greyscale Regarding claim 32, Lotti ‘034 discloses the first planar middle portion and the second planar middle portion each comprise surface roughness (paragraph 46). 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, Eric Rosen can be reached at 571-270-7855. 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 1/29/2025
Read full office action

Prosecution Timeline

Oct 24, 2024
Application Filed
Jan 30, 2026
Non-Final Rejection — §102, §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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