Prosecution Insights
Last updated: October 02, 2026
Application No. 18/417,941

HAIR CARE APPLIANCE WITH POWERED ATTACHMENT

Final Rejection §103
Filed
Jan 19, 2024
Priority
Jan 19, 2023 — provisional 63/480,680 +1 more
Examiner
MCCORMACK, JOHN PATRICK
Art Unit
3762
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Sharkninja Operating LLC
OA Round
2 (Final)
71%
Grant Probability
Favorable
3-4
OA Rounds
3m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
599 granted / 840 resolved
+1.3% vs TC avg
Strong +29% interview lift
Without
With
+28.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
15 currently pending
Career history
857
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
54.9%
+14.9% vs TC avg
§102
18.8%
-21.2% vs TC avg
§112
22.7%
-17.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 840 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 . Response to Arguments Applicants’ arguments filed 7/28/2026 with respect to amended claims being novel over the prior art of record have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Jackson. Claim Rejections - 35 USC § 103 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 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. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-3 and 6-10 are rejected under 35 U.S.C. 103 as being unpatentable over Morikawa (WO2019215972) in view of Jackson (US 8,132,571). As for claims 1 and 2, Morikawa discloses a brush accessory, comprising: a rounded body (1, fig. 1a) having a lumen extending therethrough (fig. 3) and an attachment collar at one end thereof defining an opening of the lumen (p. 2, 3rd paragraph, beginning with “The iron head”); at least two bristles positioned along a first section of the rounded body (12, fig. 2a), the first section including at least one outlet opening positioned between the at least two bristles (fig. 2b); and a heater assembly positioned along a second section of the rounded body, the heater assembly comprising a plurality of tines (p. 3, 3rd paragraph from bottom, starting with “The material constituting”). Morikawa discloses the claimed invention except for expressly disclosing the attachment collar comprising a plurality of electrical connectors positioned longitudinally around the opening; and the heater assembly comprising a heating element electrically coupled to the plurality of electrical connectors. However, examiner notes that Morikawa discloses the heater moved out to the attachment head (p. 3, 3rd full paragraph) which would require the heater assembly comprising the attachment collar comprising a plurality of electrical connectors positioned longitudinally around the opening; and the heater assembly comprising a heating element electrically coupled to the plurality of electrical connectors. However, Morikawa does not expressly disclose the attachment collar comprising a plurality of electrical connectors positioned longitudinally around the opening; and the heater assembly comprising a heating element electrically coupled to the plurality of electrical connectors. Jackson teaches the attachment collar comprising a plurality of electrical connectors positioned longitudinally around the opening; and the heater assembly comprising a heating element electrically coupled to the plurality of electrical connectors (45, fig. 2a, 5:55-57) in order to provide an efficient means of delivering power to the attachment. Morikawa would benefit equally from providing an efficient means of delivering power to the attachment. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with the attachment collar comprising a plurality of electrical connectors positioned longitudinally around the opening; and the heater assembly comprising a heating element electrically coupled to the plurality of electrical connectors as taught by Jackson in order to provide an efficient means of delivering power to the attachment. Morikawa discloses a distance between adjacent tines (13, fig. 2a) and the claimed invention except for expressly reciting a distance between adjacent tines of the plurality of tines is between about 0.5 mm and about 0.7 mm. However, at the time the invention was made, it would have been an obvious matter of design choice to a person of ordinary skill in the art to provide a distance between adjacent tines of the plurality of tines is between about 0.5 mm and about 0.7 mm because applicant has not disclosed that a distance between adjacent tines of the plurality of tines is between about 0.5 mm and about 0.7 mm provides an advantage, is used for a particular purpose, or solves a stated problem. One of ordinary skill in the art, furthermore, would have expected Applicant's invention to perform equally well with the tine structure illustrated in fig. 2a. As for claim 3, Morikawa discloses the heater assembly comprises a heater shell with at least one opening positioned along the heater shell, and wherein at least two adjacent tines of the plurality of tines are positioned within the opening (13, fig. 2b, p. 7, 4th full paragraph, starting with “Further,” illustrates more than two tines in the open area of the rib cage heated by the heater). As for claim 6, Morikawa discloses each tine of the plurality of tines is positioned perpendicular to a longitudinal dimension of the hollow body (13, fig. 1a). As for claim 7, Morikawa discloses each tine of the at least two tines comprises a top surface and a bottom surface, and wherein each of the top and bottom surfaces are substantially planar (13, fig. 2a, upper and lower portion of each tine). As for claim 8, Morikawa discloses the at least two bristles are arranged in a plurality of rows spaced circumferentially around the first region (12, fig. 2a, at least three rows illustrated). As for claim 9, Morikawa discloses the plurality of rows comprises between 5 and 10 rows (fig. 1c illustrates the width of area containing bristles illustrating at least five rows). As for claim 10, Morikawa discloses the at least one outlet opening is configured as an outlet for airflow (D1, fig. 3). Claims 4 and 5 are rejected under 35 U.S.C. 103 as being unpatentable over Morikawa in view of Jackson as to claim 1 above and furter in view of Huang (CN219460524U). As for claim 4, Morikawa discloses 16 tines and the claimed invention except for the plurality of times comprises between 20 tines and 40 tines. Huang teaches the plurality of times comprises between 20 tines and 40 tines (20, 21, fig. 2) in order to increase the amount of heat to each strand of hair for more efficient drying. Morikawa would benefit equally from increasing the amount of heat to each strand of hair for more efficient drying. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with the plurality of times comprises between 20 tines and 40 tines as taught by Huang in order to increase the amount of heat to each strand of hair for more efficient drying. As for claim 5, Morikawa discloses the claimed invention except for each tine of the plurality of tines comprises a triangular cross-sectional shape. Huang teaches each tine of the plurality of tines comprises a triangular cross-sectional shape (20, 21, figs. 2 and 6) in order to facilitate penetration of the tines into the user’s hair. Morikawa would benefit equally from facilitating penetration of the tines into the user’s hair. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with each tine of the plurality of tines comprises a triangular cross-sectional shape as taught by Huang in order to facilitate penetration of the tines into the user’s hair. Claims 11-16, and 18-20 are rejected under 35 U.S.C. 103 as being unpatentable over Morikawa in view of Jackson and in view of Huang. As for claim 11, Morikawa discloses a brush accessory, comprising: a rounded body (1, fig. 1a, y axis) having a first section positioned symmetrically with respect to a first axis of the rounded body (p. 4, second full paragraph), a second section positioned with respect to a second axis of the rounded body orthogonal to the first axis (1, fig. 1a, x axis), a lumen extending therethrough the rounded body (fig. 3), and an attachment collar at one end thereof (p. 2, 3rd paragraph, beginning with “The iron head”); at least two bristles positioned along the first section of the rounded body (12, fig. 2a), the first section including at least one outlet opening positioned between the at least two bristles (fig. 2b); and a heater assembly positioned along the second section of the rounded body (p. 3, 3rd paragraph from bottom, starting with “The material constituting”); and a heater shell including a plurality of tines (131, fig. 4a) and a plurality of openings positioned along the shell (D1, fig. 2b). Morikawa discloses the claimed invention except for a second section positioned asymmetrically with respect to a second axis of the rounded body orthogonal to the first axis; the heater assembly comprising a first tine support having a first set of tines and a second tine support having a second set of tines, and a heater shell including a plurality of tines and a plurality of openings positioned along the shell wherein the first and second tine supports interlock such that a tine of the second set of tines is positioned adjacent to a tine of the first set of tines so as to protrude through an opening in the heater shell between adjacent tines of the heater shell. Huang teaches a second section positioned asymmetrically with respect to a second axis of the rounded body orthogonal to the first axis (1, fig. 1a, x axis, coplanar to 25, fig. 5); the heater assembly comprising a first tine support having a first set of tines and a second tine support having a second set of tines (20, 21, figs. 2 and 6, p. 5, first full paragraph starting with “As shown”), wherein the first and second tine supports interlock such that a tine of the second set of tines is positioned adjacent to a tine of the first set of tines (20, 21, figs. 2 and 6, p. 5, first full paragraph starting with “As shown”) so as to protrude through an opening in the heater shell between adjacent tines of the heater shell (20, 21, fig. 2, p. 5, first full paragraph starting with “As shown”) in order to uniformly heat the comb tines so that the hair shaping and heating are uniform. Morikawa would benefit equally from uniformly heating the comb tines so that the hair shaping and heating are uniform. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with a second section positioned asymmetrically with respect to a second axis of the rounded body orthogonal to the first axis; the heater assembly comprising a first tine support having a first set of tines and a second tine support having a second set of tines, and a heater shell including a plurality of tines and a plurality of openings positioned along the shell wherein the first and second tine supports interlock such that a tine of the second set of tines is positioned adjacent to a tine of the first set of tines so as to protrude through an opening in the heater shell between adjacent tines of the heater shell as taught by Huang in order to uniformly heat the comb tines so that the hair shaping and heating are uniform. Morikawa discloses the claimed invention except for expressly disclosing the rounded body and comprising a plurality of electrical contacts; a heating element operably coupled to the plurality of electrical contacts. Jackson teaches the rounded body and comprising a plurality of electrical contacts; a heating element operably coupled to the plurality of electrical contacts (45, fig. 2a, 5:55-57) in order to provide an efficient means of delivering power to the attachment. Morikawa would benefit equally from providing an efficient means of delivering power to the attachment. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with the rounded body and comprising a plurality of electrical contacts; a heating element operably coupled to the plurality of electrical contacts as taught by Jackson in order to provide an efficient means of delivering power to the attachment. As for claim 12, Huang teaches the first tine support comprises a plurality of tine openings configured to receive the second set of tines (20, 21, figs. 2) in order to improve the heat transfer efficiency. Morikawa would benefit equally from improving the heat transfer efficiency. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with the first tine support comprises a plurality of tine openings configured to receive the second set of tines as taught by Huang in order to improve the heat transfer efficiency. As for claim 13, Huang teaches each tine of the first and second sets of tines comprises a triangular cross-sectional shape (20, 21, figs. 2 and 6) in order to facilitate penetration of the tines into the user’s hair. Morikawa would benefit equally from facilitating penetration of the tines into the user’s hair. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with each tine of the plurality of tines comprises a triangular cross-sectional shape as taught by Huang in order to facilitate penetration of the tines into the user’s hair. As for claim 14, Huang teaches each tine of the first and second sets of tines is positioned perpendicular to a longitudinal dimension of the rounded body (20, 21, fig. 2) in order to facilitate engaging with a user’s hair. Morikawa would benefit equally from facilitating engaging with a user’s hair. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with each tine of the first and second sets of tines is positioned perpendicular to a longitudinal dimension of the rounded body as taught by Huang in order to facilitate engaging with a user’s hair similar to Morikawa. As for claim 15, Huang teaches each tine of the first and second sets of tines comprises a top surface and a bottom surface, and wherein each of the top and bottom surfaces are substantially planar (20, 21, fig. 2) so as to facilitate engaging with a user’s hair similar to Morikawa. As for claim 16, Huang teaches 16 tines (fig. 6) and the claimed invention except for each of the first and second sets of tines comprises 16 tines. Huang teaches each of the first and second sets of tines comprises 16 tines (20, 21, fig. 2) in order to increase the amount of heat to each strand of hair for more efficient drying. Morikawa would benefit equally from increasing the amount of heat to each strand of hair for more efficient drying. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with each of the first and second sets of tines comprises 16 tines as taught by Huang in order to increase the amount of heat to each strand of hair for more efficient drying. As for claim 18, Morikawa discloses the at least two bristles are arranged in a plurality of rows spaced circumferentially around the first region (12, fig. 4). As for claim 19, Morikawa discloses the plurality of rows comprises between 5 and 10 rows (fig. 1c). As for claim 20, Morikawa discloses the at least one outlet opening is configured as an outlet for airflow (D1, fig. 3). Claim 17 is rejected under 35 U.S.C. 103 as being unpatentable over Morikawa in view Jackson and in view of Huang as applied to claim 11 above and further in view of Cai (CN205513049U). Morikawa discloses the claimed invention except for the heater shell that covers at least a portion of each of the first and second tine supports. Cai teaches the heater shell that covers at least a portion of each of the first and second tine supports (p. 3, second paragraph under “Preferred Embodiment”) in order to prevent heat damage to the scalp. Morikawa would benefit equally from preventing heat damage to the scalp. It would have been obvious for one of ordinary skill in the art at the time of filing to modify the dryer as disclosed by Morikawa with the heater shell that covers at least a portion of each of the first and second tine supports as taught by Cai in order to prevent heat damage to the scalp. Conclusion Applicants’ amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicants are 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 JOHN PATRICK MCCORMACK whose telephone number is (571)270-7472. The examiner can normally be reached 9:00 - 1:30 PST. 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, Helena Kosanovic can be reached at 571-272-9059. 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. /JOHN P MCCORMACK/Primary Examiner, Art Unit 3762
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Prosecution Timeline

Jan 19, 2024
Application Filed
May 08, 2026
Non-Final Rejection mailed — §103
Jul 20, 2026
Examiner Interview Summary
Jul 20, 2026
Applicant Interview (Telephonic)
Jul 28, 2026
Response Filed
Sep 03, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

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

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Prosecution Projections

3-4
Expected OA Rounds
71%
Grant Probability
99%
With Interview (+28.8%)
2y 11m (~3m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 840 resolved cases by this examiner. Grant probability derived from career allowance rate.

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