Prosecution Insights
Last updated: April 19, 2026
Application No. 18/272,603

HAIR DRYER

Non-Final OA §102§103
Filed
Jul 17, 2023
Examiner
LAU, JASON
Art Unit
3762
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Koninklijke Philips N V
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
3y 4m
To Grant
68%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allow Rate
470 granted / 880 resolved
-16.6% vs TC avg
Moderate +14% lift
Without
With
+14.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
61 currently pending
Career history
941
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
64.5%
+24.5% vs TC avg
§102
18.8%
-21.2% vs TC avg
§112
15.0%
-25.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 880 resolved cases

Office Action

§102 §103
DETAILED ACTION 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) 1, 2, 7 is/are rejected under 35 U.S.C. 102a1 as being anticipated by Tinkham (US 1961179 A). Regarding claim 1, Tinkham discloses a hair dryer for generating an air flow (it is capable of drying hair), the hair dryer comprising: a curved shape unit (Fig. 3, 11) defining an outer surface (a user can touch it from the outside) of the hair dryer, a first part (upstream portion with heating element 4) of the outer surface being at an angle to a desired direction of the air flow, and a second part (curved portion near the slot 14) of the outer surface being aligned with the desired direction of the air flow; a fan unit (3+5+6+7) at (i.e., near) the first part of the outer surface, the fan unit having an air inlet (Fig. 1, 3a), and an air outlet (5) arranged for blowing air along the first part of the outer surface; and a heater (Fig. 3, 4) arranged for heating a user's hair. Regarding claim 2, Tinkham discloses the hair dryer as claimed in claim 1, wherein the heater is at least partially integrated in the fan unit (the heater 4 is located inside section 5 of the fan unit). Regarding claim 7, Tinkham discloses the hair dryer as claimed in claim 1,wherein the hair dryer comprises a handle (Fig. 1, 1) coupled (indirectly coupled) to the curved shape unit, the handle having a grip part (Fig. 1: base adjacent the foot pedal 24) arranged for being gripped by a user, and a connection part (neck at the top of the handle) between the grip part and the outer surface, the connection part being thinner than the grip part. 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. 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. Claim(s) 3, 4, 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Tinkham (US 1961179 A) in view of Bang (KR 20140010307 A). Regarding claims 3, 4, Tinkham discloses the hair dryer as claimed in claim 1, wherein the heater comprises a heating wire except: wherein the heater comprises a heating wire embedded in the outer surface (as recited in claim 3), or wherein the heating wire is mounted in a groove of the outer surface (as recited in claim 4). However, Bang teaches a hair dryer comprises a heating wire (Fig. 3, 120) embedded in the outer surface of a body (Fig. 3, 151), and wherein the heating wire is mounted in a groove (151a) of the outer surface. It would have been obvious to a person skilled in the art at the time of effective filing of the application to modify Tinkham wherein the heater comprises a heating wire embedded in the outer surface, and wherein the heating wire is mounted in a groove of the outer surface. The motivation to combine is so that the heating wire can be securely fixed to the outer surface. Regarding claim 6, Tinkham discloses the hair dryer as claimed in claim 1, except wherein a motor of the fan unit is mounted at an inner surface of the curved shape unit. However, Bang teaches a hair dryer wherein a motor (Fig. 3, 111) of the fan unit is mounted at an inner surface of the body (151) (the body 151 is analogous to the curved shaped unit 11 in Tinkham). It would have been obvious to a person skilled in the art at the time of effective filing of the application to modify Tinkham wherein a motor of the fan unit is mounted at an inner surface of the curved shape unit. With the modification, the fan (Tinkham, 3) and fan motor (Tinkham, 2) would be replaced with a fan-motor integrated with the curved shaped unit, similar to how Bang teaches integrating the fan-motor (110) with the body (151). The motivation to combine is to reduce the size of the dryer. Claim(s) 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Tinkham (US 1961179 A) in view of Yune (US 6205677 B1). Regarding claim 5, Tinkham discloses the hair dryer as claimed in claim 1, except wherein the heater comprises an infrared radiation unit inside the curved shape unit, the infrared radiation unit being arranged for producing heat radiation towards the user's hair. However, Yune teaches a hair dryer, wherein the heater comprises an infrared radiation unit (Fig. 2, 18) inside the curved shape unit (Fig. 2, 16), the infrared radiation unit being arranged for producing heat radiation towards the user's hair. It would have been obvious to a person skilled in the art at the time of effective filing of the application to modify Tinkham wherein the heater comprises an infrared radiation unit inside the curved shape unit, the infrared radiation unit being arranged for producing heat radiation towards the user's hair. With the modification, the infrared heater could replace or supplement the heating coil in Tinkham. The motivation to combine is so that the interior of the hair can be heated and dried without damaging the exterior of the hair, and to reduce energy consumption (see Background of Yune). If the infrared heat supplements the heating coil, then an additional motivation to combine is to increase the heat output for faster drying. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JASON LAU whose telephone number is (571)270-7644. The examiner can normally be reached Mon-Fri 8:00-5:00. 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, Michael 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. /JASON LAU/Primary Examiner, Art Unit 3762
Read full office action

Prosecution Timeline

Jul 17, 2023
Application Filed
Feb 23, 2026
Non-Final Rejection — §102, §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

1-2
Expected OA Rounds
53%
Grant Probability
68%
With Interview (+14.3%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 880 resolved cases by this examiner. Grant probability derived from career allow rate.

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