Prosecution Insights
Last updated: July 17, 2026
Application No. 18/268,331

HAIRCARE APPLIANCE

Final Rejection §103
Filed
Jun 20, 2023
Priority
Dec 23, 2020 — GB 2020489.7 +1 more
Examiner
YUEN, JESSICA JIPING
Art Unit
3762
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Dyson Technology Limited
OA Round
2 (Final)
60%
Grant Probability
Moderate
3-4
OA Rounds
4m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allowance Rate
671 granted / 1117 resolved
-9.9% vs TC avg
Strong +22% interview lift
Without
With
+21.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
41 currently pending
Career history
1146
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
78.4%
+38.4% vs TC avg
§102
4.7%
-35.3% vs TC avg
§112
10.3%
-29.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1117 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 text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1-2, 4-7, 13, 17 are rejected under 35 U.S.C. 103 as being unpatentable over Krups (DE 9214397) in view of Kveton (CH 257884). With regard to claim 1, Krups discloses an attachment 14, 52 (Figs. 1, 12-13) for a haircare appliance 10 comprising an airflow generator (translation, paragraph [0009], line 2), the attachment comprising an air inlet (at 50, Figs. 1, 12-13) for receiving airflow from the airflow generator, an air outlet 22 for emitting the airflow, and a hair treatment chamber (Fig. 1, formed by the curved surface 33 of the upper part 21 of the diffuser 14) comprises a wall 33, an opening (see reproduced Fig. 1) through which hair is insertable into the hair treatment chamber, wherein the hair treatment chamber is movable from a first orientation relative to the air inlet (Fig. 12) to a second orientation relative to the air inlet (Fig. 13), the second orientation different in angular position to the first orientation (Figs. 12-13). With regard to claim 17, Krups discloses a haircare appliance 10 comprising: an airflow generator for generating an airflow, the airflow generator disposed in a housing (translation, paragraphs [00009], [0050], motor, impeller); an inlet 13, 50 for receiving airflow from the airflow generator; an air outlet 22 for emitting the airflow; and a hair treatment chamber for receiving hair, the air outlet 22 configured to direct airflow into the hair treatment chamber; wherein the hair treatment chamber comprises a wall 33, an opening through which hair is insertable into the hair treatment chamber; wherein the hair treatment chamber is movable from a first orientation relative (Fig. 12) to the housing 11, 12 to a second orientation (Fig. 13) relative to the housing 11, 12, the second orientation different to the first orientation (Figs. 12-13). However, Krups does not disclose an aperture in the wall, wherein the aperture allows airflow to escape from the interior of the hair treatment chamber. Kveton discloses a hair treatment chamber A comprising a wall1, an opening (sole figure, at 2) through which hair is insertable into the hair treatment chamber A, and an aperture 11 in the wall, wherein the aperture 11 allows airflow to escape from the interior of the hair treatment chamber A (see air flow arrows in Figure). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to modify the hair treatment chamber of the attachment of Krups to include an aperture in the wall, wherein the aperture allows airflow to escape from the interior of the hair treatment chamber as taught by Kveton in order to facilitate exhaust the air from hair treatment chamber to the ambient to improve drying efficiency. With regard to claim 2, Krups discloses wherein the aperture (see reproduced Fig. 1 below) formed in the wall 33. With regard to claim 4, Krups discloses wherein the wall 33 comprises a porous material (Figs. 1, 12-13, wall 33 is made by material with porous, see 22 and open bottom of 23 in Figs. 1, 12-13)). With regard to claim 5, Krups discloses wherein the porous material 33 defines the aperture (Figs. 1, 12-13). With regard to claim 6, Krups discloses wherein the attachment comprises a plurality of apertures formed in the wall 33 (Figs. 1, 12-13). With regard to claim 7, Krups discloses wherein the air outlet 22 is configured to direct airflow into the hair treatment chamber when the hair treatment chamber is in the first orientation and the second orientation (Figs. 1, 12-13). With regard to claim 13, Krups discloses wherein the attachment 14, 52 comprises a conduit 51, 56, the conduit providing a flow path from the air inlet to the air outlet (Figs. 1, 12-13), wherein the conduit comprises a first part 56 in fluid communication with the air outlet 22 and fixed relative to the air outlet 22 and a second part 51 in fluid communication with the air inlet 50 and fixed relative to the air inlet 50, the second part 51 moveable relative to the first part 56 between the first configuration (Fig. 12) and the second configuration (Fig. 13). Claims 1, 2, 4-5, 7-11, 13 are rejected under 35 U.S.C. 103 as being unpatentable over Taylor (US 2017/0231359 A1) in view of Kveton (CH 257884). With regard to claim 1, Taylor discloses an attachment 1 for a haircare appliance 8 comprising an airflow generator (inherent for hair dryer 8), the attachment 1 comprising an air inlet (Fig. 1, at 9) for receiving airflow from the airflow generator, an air outlet 13 for emitting the airflow (Fig. 2), and a hair treatment chamber (Figs. 1-2, formed by hood 3) for receiving hair, the air outlet 13 configured to direct airflow into the hair treatment chamber; wherein the hair treatment chamber 3 comprises a wall 3, an opening (not numbered, Figs. 1-2) through which hair is insertable into the hair treatment chamber 2; wherein the hair treatment chamber is movable from a first orientation relative to the air inlet to a second orientation relative to the air inlet, the second orientation different in angular position to the first orientation (Fig. 1, flexible hose 5 allows any orientation of the hood, i.e. hair treatment chamber). However, Taylor does not disclose an aperture in the wall, wherein the aperture allows airflow to escape from the interior of the hair treatment chamber. Kveton discloses a hair treatment chamber A comprising a wall 1, an opening (sole figure, at 2) through which hair is insertable into the hair treatment chamber A, and an aperture 11 in the wall 1, wherein the aperture 11 allows airflow to escape from the interior of the hair treatment chamber A (see air flow arrows in Figure). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to modify the hair treatment chamber of the attachment of Taylor to include an aperture in the wall, wherein the aperture allows airflow to escape from the interior of the hair treatment chamber as taught by Kveton in order to facilitate exhaust the air from hair treatment chamber to the ambient to improve drying efficiency. With regard to claim 2, Kveton discloses the aperture 11 formed in the wall 1 (Figure). With regard to claim 4, Taylor discloses wherein the wall 4 comprises a porous 13 material. With regard to claim 5, Taylor discloses wherein the porous material 4 defines the aperture 13 (Figs. 1-2). With regard to claim 7, Taylor discloses wherein the air outlet 13 is configured to direct airflow into the hair treatment chamber 3 when the hair treatment chamber is in the first orientation and the second orientation. With regard to claim 8, Taylor discloses wherein in the first orientation a central axis of the housing is parallel to a central axis of the opening and in the second orientation the central axis of the housing is perpendicular to the central axis of the opening (Fig. 1, flexible hose 5 allows any orientation of the hood 3). With regard to claim 9, Taylor discloses wherein the attachment 1 comprises a conduit 5, the conduit 5 providing a flow path between the air inlet and the air outlet (Fig. 1), wherein the conduit is deformable between a first position when the attachment is in the first orientation and a second position when the attachment is in the second orientation (Fig. 1, paragraph [0043], flexile hose). With regard to claim 10, Taylor discloses wherein the conduit 5 comprises a tube 5 which is configured to concertina (Fig. 1). With regard to claim 11, Taylor discloses wherein the conduit 5 is deformable from the first position to the second position in response to a force applied to the conduit (Fig. 1, paragraph [0043]). With regard to claim 13, Taylor discloses wherein the attachment 1 comprises a conduit 5, the conduit 5 providing a flow path from the air inlet to the air outlet, wherein the conduit 5 comprises a first part (Fig. 1, part connected to hood 3) in fluid communication with the air outlet 13 and fixed relative to the air outlet and a second part (Fig. 1, part near 9) in fluid communication with the air inlet and fixed relative to the air inlet, the second part moveable relative to the first part between the first configuration and the second configuration (Fig. 1). Claims 1, 2-7, 12-14, 17 are rejected under 35 U.S.C. 103 as being unpatentable over Churas (US 4,021,930) in view of Kveton (CH 257884). With regard to claim 1, Churas discloses an attachment 14 (col. 6, lines 18-20, hood 14 attached to haircare appliance 13 by pin-and-slot hinge connection) for a haircare appliance 13 comprising an airflow generator 20, 24, the attachment 14 comprising an air inlet (Fig. 1, at 28) for receiving airflow from the airflow generator (Fig. 1), an air outlet 59 for emitting the airflow (Fig. 1), and a hair treatment chamber (Figs. 1-2, formed by hood 14) for receiving hair, the air outlet 59 configured to direct airflow into the hair treatment chamber 14; wherein the hair treatment chamber 14 comprises a wall 51, an opening (not numbered, Fig. 1) through hair is insertable into the hair treatment chamber 14; wherein the hair treatment chamber 14 is movable from a first orientation relative to the air inlet to a second orientation relative to the air inlet (Fig. 1, col. 5, lines 49-51), the second orientation different in angular position to the first orientation (Fig. 1, col. 6, lines 18-40). With regard to claim 17, Churas discloses a haircare appliance 12 comprising: an airflow generator 20, 24 for generating an airflow, the airflow generator disposed in a housing 19; an air inlet 26 for receiving airflow from the airflow generator; an air outlet 49 for emitting the airflow; and a hair treatment chamber 14 for receiving hair, the air outlet 59 configured to direct airflow into the hair treatment chamber 14; wherein the hair treatment chamber 14 comprising a wall 51, an opening (not numbered, Fig. 1) through hair is insertable into the hair treatment chamber 14; wherein the hair treatment chamber is movable from a first orientation relative to the housing 19 to a second orientation relative to the housing 19 (Fig. 1), the second orientation different in angular position to the first orientation (Fig. 1, col. 6, lines 18-40). However, Churas does not disclose an aperture in the wall, wherein the aperture allows airflow to escape from the interior of the hair treatment chamber. Kveton discloses a hair treatment chamber A comprising a wall 1, an opening (sole figure, at 2) through which hair is insertable into the hair treatment chamber A, and an aperture 11 in the wall 1, wherein the aperture 11 allows airflow to escape from the interior of the hair treatment chamber A (see air flow arrows in Figure). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to modify the hair treatment chamber of the attachment of Churas to include an aperture in the wall, wherein the aperture allows airflow to escape from the interior of the hair treatment chamber as taught by Kveton in order to facilitate exhaust the air from hair treatment chamber to the ambient to improve drying efficiency. With regard to claim 2, Kveton discloses the aperture 11 formed in the wall 1 and is open to ambient and the air outlet (Figure). With regard to claim 3, Kveton discloses the air outlet (figure at 2) is configured to direct airflow away from the opening and towards the aperture in use (see airflow arrows in Figure). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to modify the attachment of Churas to form an aperture in the wall and to configure the air outlet to direct airflow away from the opening and towards the aperture in use as taught by Kveton in order to withdrawn the moisture-laden air from the hair treatment chamber. With regard to claim 4, Churas discloses wherein the wall 51 comprises a porous 59 material. With regard to claim 5, Churas discloses wherein the porous material 51 defines the aperture 59 (Figs. 1, 3). With regard to claim 6, Churas discloses wherein the attachment 14 comprises a plurality of apertures 107 formed in the wall 51 ( Fig. 6). With regard to claim 7, Churas discloses wherein the air outlet 59 is configured to direct airflow into the hair treatment chamber 14 when the hair treatment chamber is in the first orientation and the second orientation. With regard to claim 12, Churas et al. discloses a conduit 15 comprises a retaining pin 117 engageable with a part of the hair treatment chamber 14 to restrict movement of the conduit 15 away from the hair treatment chamber 14 (Figs. 1, 6, col. 6, lines 18-26). With regard to claim 13, Churas discloses wherein the attachment 14 comprises a conduit 15, the conduit 15 providing a flow path from the air inlet to the air outlet, wherein the conduit 15 comprises a first part 97 in fluid communication with the air outlet 59 and fixed relative to the air outlet and a second part 99 in fluid communication with the air inlet and fixed relative to the air inlet (Fig. 1), the second part moveable relative to the first part between the first configuration and the second configuration (Fig. 1, col. 5, lines 47-54). With regard to claim 14, Churas discloses wherein one of the first part 97 and the second part 99 comprises a channel and the other of the second part and the first part is slidable in the channel (Fig. 1, col. 5, lines 47-54). Claim 12 is rejected under 35 U.S.C. 103 as being unpatentable over Taylor (US 2017/0231359 A1) in view of Kveton (CH 257884) as applied to claim 9 as above, and further in view of Churas et al. (US 4,021,930). The attachment of Taylor as modified by Kveton as above includes all that is recited in claim 12 except for the conduit comprises a retaining pin engageable with a part of the hair treatment chamber to restrict movement of the conduit away from the hair treatment chamber. Churas et al. discloses a conduit 15 comprises a retaining pin 117 engageable with a part of the hair treatment chamber 14 to restrict movement of the conduit 15 away from the hair treatment chamber 14 (Figs. 1, 6, col. 6, lines 18-26). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to further modify the attachment of Taylor to provide the conduit with a retaining pin engageable with a part of the hair treatment chamber to restrict movement of the conduit away from the hair treatment chamber as taught by Churas et al. in order to securely attach the conduit to the hair treatment chamber. Claim 16 is rejected under 35 U.S.C. 103 as being unpatentable over Krups (DE 9214397) or Taylor (US 2017/0231359 A1) or Churas (US 4,021,930) in view of Kveton (CH 257884) as applied to claim 1 as above, and further in view of Bastien (US 5,235,760). The attachment of Krups or Taylor or Churas as modified by Kveton as above includes all that is recited in claim 16 except for the attachment comprises a sensor configured to output a signal indicative of a property of hair within the hair treatment chamber in use. Bastien discloses an attachment 12 comprises a sensor 36 configured to output a signal indicative of a property of hair within the hair treatment chamber in use (Fig. 1). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to further modify the attachment of Krups or Taylor or Churas to include a sensor configured to output a signal indicative of a property of hair within the hair treatment chamber in use as taught of Bastien in order to control he treatment of the hair. Claim 18 is rejected under 35 U.S.C. 103 as being unpatentable over Krups (DE 9214397) in view of Kveton (CH 257884) as applied to claim 17 as above, and further in view of Stephens et al.(US 2017/0150796 A1). With regard to claim 18, Krups further discloses wherein the haircare appliance 10 comprises a handle unit 16 and an attachment 14 comprising the air inlet (Fig. 1, at 50), the air outlet 22 and the hair treatment chamber, the attachment 14 removably attachable to the handle unit 16. However, Krups does not disclose the airflow generator is disposed within the handle unit. Stephens et al. discloses a haircare appliance 10 comprising a handle unit 20 within which an airflow generator 70 is disposed (Fig. 2). Therefore, it would have been obvious to someone with ordinary skill in the art before the effective filing date of the invention to modify the haircare appliance of Krups to dispose the airflow generator within the handle unit as taught by Stephens in order to prevent the hair from being pulled into the airflow generator and therefore improve the safety. Allowable Subject Matter Claim 15 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Response to Arguments Applicant’s arguments with respect to claim(s) 1-18 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is 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 JESSICA J YUEN whose telephone number is (571)272-4878. The examiner can normally be reached Monday-Friday 9am-5pm. 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, MICHAEL G HOANG can be reached at (571) 272-6460. 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. /Jessica Yuen/ Primary Examiner Art Unit 3762 JY
Read full office action

Prosecution Timeline

Jun 20, 2023
Application Filed
Jan 27, 2026
Non-Final Rejection mailed — §103
Apr 27, 2026
Response Filed
Jun 03, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680757
COMPACT HIGH PERFORMANCE THROUGH-AIR APPARATUS
4y 1m to grant Granted Jul 14, 2026
Patent 12678745
DEVICE FOR HOMOGENIZING A GAS DISTRIBUTION IN A PROCESS CHAMBER
3y 5m to grant Granted Jul 14, 2026
Patent 12668914
LAUNDRY TREATING APPARATUS AND METHOD FOR CONTROLLING THE LAUNDRY TREATING APPARATUS
4y 1m to grant Granted Jun 30, 2026
Patent 12669284
Drying Devices Including a Rotatable Interior Container
3y 0m to grant Granted Jun 30, 2026
Patent 12663211
COCKPIT MODULE OF PURPOSE-BUILT VEHICLE
3y 8m to grant Granted Jun 23, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
60%
Grant Probability
82%
With Interview (+21.6%)
3y 5m (~4m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1117 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month