Prosecution Insights
Last updated: April 19, 2026
Application No. 18/715,186

ROTATING AN EXTERNAL CUTTING MEMBER OF A SHAVING UNIT

Non-Final OA §102§103
Filed
May 31, 2024
Examiner
KEENA, ELLA LORRAINE
Art Unit
3724
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Koninklijke Philips N V
OA Round
1 (Non-Final)
20%
Grant Probability
At Risk
1-2
OA Rounds
2y 9m
To Grant
0%
With Interview

Examiner Intelligence

Grants only 20% of cases
20%
Career Allow Rate
1 granted / 5 resolved
-50.0% vs TC avg
Minimal -20% lift
Without
With
+-20.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
64 currently pending
Career history
69
Total Applications
across all art units

Statute-Specific Performance

§103
62.7%
+22.7% vs TC avg
§102
22.7%
-17.3% vs TC avg
§112
14.7%
-25.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 5 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 Objections Claim 1 is objected to because of the following informalities: the use of the legal phrase “comprising” multiple times in addition to the use of “characterized in that” creates confusion as to what the transitional phrase is, and where the preamble ends. Appropriate correction is required. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-4 and 10-12 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Tetsuhiko Shimizu (EP 3115160 A1 – hereinafter Shimizu). Regarding claim 1, Shimizu teaches a shaving unit for an electric shaver, comprising a supporting member (Fig. 8, Head Case 28) and at least two hair-cutting units (Fig. 4A, Blade Unit 16) supported by the supporting member, wherein each hair- cutting unit comprises: a housing (Fig. 8, Outer Blade Case 34) having a central axis (Fig. 8, central axis defined by central circular opening in Outer Blade Case 34); an external cutting member (Fig. 4A, Outer Blade 22) supported by the housing and comprising an annular shaving area having a plurality of hair-entry openings (Fig. 1, Hair Inlets 23), the external cutting member being rotatable about the central axis relative to the housing ([0012]); and an internal cutting member (Fig. 4A, Inner Blade 42) which is covered by the external cutting member and rotatable about the central axis relative to the external cutting member ([0022] – 22 rotates at 10 rpm, [0029] – 42 rotates at 2,700 rpm) and has a coupling member (Fig. 4A, Inner Blade Holder 44); wherein the shaving unit comprises, for each hair-cutting unit, an individual drive shaft (Fig. 5A, Inner Blade Drive Shaft 46) which is releasably coupled to the coupling member of the internal cutting member for rotating the internal cutting member about the central axis relative to the external cutting member ([0041]); characterized in that each hair-cutting unit comprises a transmission unit by means of which the external cutting member is rotatable about the central axis relative to the housing (Fig. 4A- 6B), the transmission unit being accommodated in the housing of the hair-cutting unit and comprising: a first transmission member (Fig. 5A, Gear 80) mounted to the internal cutting member to be rotatable together with the internal cutting member about the central axis; a second transmission member (Fig. 4A, Gear 74) mounted to the external cutting member to be rotatable together with the external cutting member about the central axis; and at least one intermediate transmission member (Fig. 5A, Gear 58) via which the first transmission member is coupled to the second transmission member to convert a rotation of the internal cutting member about the central axis into a rotation of the external cutting member about the central axis (Fig. 4A-6B, the internal and external cutting members are connected via gears such that rotating the internal gears would result in the external gears being rotated). Regarding claim 2, Shimizu further teaches the shaving unit as claimed in claim 1, wherein: each hair-cutting unit is pivotable relative to the supporting member about at least one pivot axis (Fig. 9A and 9B; [0044]); and the coupling member of the internal cutting member of each hair-cutting unit is configured to maintain rotational coupling with the individual drive shaft associated with the hair-cutting unit during pivoting of the hair-cutting unit about the at least one pivot axis (Fig. 3; [0046]). Regarding claim 3, Shimizu further teaches a shaving unit as claimed in claim 2, wherein each of the individual drive shafts comprises a coupling head (Fig. 5A, round top portion of Inner Blade Drive Shaft 46), wherein the coupling member of the internal cutting member of each hair-cutting unit comprises a cavity accommodating the coupling head of the individual drive shaft associated with the hair-cutting unit (Fig. 3), and wherein surfaces of the coupling head and the cavity are configured to slide over each other during pivoting of the hair-cutting unit about the at least one pivot axis (Fig. 3, it is clear from the structure in Fig. 3 that the surfaces of the cavity and coupling hide would slide over each other upon pivoting of the cutting unit). Regarding claim 4, Shimizu further teaches a shaving unit as claimed in claim 1, wherein the transmission unit is configured to convert a rotation of the internal cutting member about the central axis at a first rotational speed into a rotation of the external cutting member about the central axis at a second rotational speed (Fig. 4A-6B, the internal and external cutting members are connected via gears such that rotating the internal gears would result in the external gears being rotated), wherein the second rotational speed ([0022] – 22 rotates at 10 rpm) is lower than the first rotational speed ([0029] – 42 rotates at 2,700 rpm). Regarding claim 10, Shimizu further teaches a shaving unit as claimed in claim 1, wherein the housing (Fig. 8, Outer Blade Case 34) of each hair-cutting unit comprises a skin-contacting surface which surrounds the external cutting member of the hair-cutting unit. Regarding claim 11, Shimizu further teaches an electric shaver comprising: a main body (Fig. 2, Main Body 2) accommodating a motor ([0013]); and a shaving unit (Fig. 4A, Blade Unit 16) as claimed in claim 1, wherein the supporting member (Fig. 8, Head Case 28) of the shaving unit is coupled to the main body (Fig. 1). Regarding claim 12, Shimizu further teaches an electric shaver as claimed in claim 11, wherein: the supporting member of the shaving unit comprises a connecting member (Fig. 8, Engagement Claw 18) by means of which the shaving unit is releasably connected to the main body (Fig. 2; [0015]); the connecting member accommodates a main drive shaft (Fig. 2, Drive Shaft 12) which is coupled to the motor in a connected condition of the shaving unit to the main body ([0014]); and the shaving unit comprises a transmission system (Fig. 5A, system comprising Gear 52) to convert rotation of the main drive shaft into rotation of the individual drive shaft of each hair-cutting unit of the shaving unit ([0030]). 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. Claims 5-9 are rejected under 35 U.S.C. 103 as being unpatentable over Tetsuhiko Shimizu (EP 3115160 A1 – hereinafter Shimizu). Regarding claim 5, Shimizu further teaches a shaving unit as claimed in claim 4, wherein the transmission unit is configured to realize a speed reduction rate of about 270 (Calculated from [0022] – 22 rotates at 10 rpm and [0029] – 42 rotates at 2,700 rpm). However, it would have been obvious to one of ordinary skill in the art before the time of filing to modify the rotational speeds of the internal and external blades of Shimizu such that the speed reduction rate is in a range of about 20 to 25 as a matter of routine optimization since it has been held that “where the general conditions of a claim are disclosed in the prior art, it is not inventive to discover the optimum or workable ranges by routine experimentation." The rotational speed of the external blade is disclosed to be a result effective variable which must be optimized to prevent user pain and raise hair for cutting ([0022]), and the rotational speed of the internal blade is disclosed to be a result effective variable which must be optimized to prevent poor shaving quality and minimize abrasion of the blade ([0029]). Regarding claim 6, Shimizu further teaches a shaving unit as claimed in claim 1, wherein the transmission unit is configured to make the external cutting member run at a rotational speed of about 10 rpm ([0022] – 22 rotates at 10 rpm). However, it would have been obvious to one of ordinary skill in the art before the time of filing to modify the rotational speed of the external blade of Shimizu to be in a range of about 40 rpm to 120 rpm as a matter of routine optimization since it has been held that “where the general conditions of a claim are disclosed in the prior art, it is not inventive to discover the optimum or workable ranges by routine experimentation." The rotational speed of the external blade is disclosed to be a result effective variable which must be optimized to prevent user pain and raise hair for cutting ([0022]). Regarding claim 7, Shimizu further teaches a shaving unit as claimed in claim l, wherein in the transmission unit: the first transmission member comprises a first gear wheel (Fig. 5A, Gear 80) arranged co-axially relative to the central axis; the second transmission member comprises a second gear wheel (Fig. 4A, Gear 74) arranged co-axially relative to the central axis; and the at least one intermediate transmission member (Fig. 5A, Gear 58) comprises at least one intermediate gear wheel via which the first gear wheel is coupled to the second gear wheel. Shimizu does not teach that the first transmission member is arranged on the coupling member of the internal cutting member, that the second transmission member is arranged on an inner side of an annular flange portion of the external cutting member and, and each intermediate gear wheel having its rotational bearing arranged on the housing. However, it would have been obvious to one of ordinary skill in the art before the time of filing to modify the device of Shimizu such that these features are arranged at the aforementioned locations as it has been held that the position of a feature may be in a different location as an obvious matter of design choice as long as it does not modify the operation of the device In re Japikse, 181 F.2d 1019, 86 USPQ 70 (CCPA 1950) and In re Kuhle, 526 F.2d 553, 188 USPQ 7 (CCPA 1975). Examiner finds that the location of the gears does not modify the operation of the device. Regarding claim 8, Shimizu further teaches a shaving unit as claimed in claim 7, wherein the transmission unit comprises at least two intermediate gear wheels (Fig. 5A, Gear 58a and Fig. 4A, Gear 78), and wherein the rotational bearings of the respective intermediate gear wheels are included in an integral housing part (Fig. 4A and 5A, integral housing part composed of Blade Rest 76 and Gear Case 50). Regarding claim 9, Shimizu further teaches a shaving unit as claimed in claim 7, wherein in the transmission unit, the at least one intermediate transmission member comprises a pair of intermediate gear wheels in stacked configuration (Fig. 5A, Gear 58a and Fig. 4A, Gear 78). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ELLA LORRAINE KEENA whose telephone number is (571)272-1806. The examiner can normally be reached 7:30am - 5:00 pm ET. 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, Boyer Ashley can be reached at (571) 272-4502. 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. /ELLA L KEENA/Examiner, Art Unit 3724 /BOYER D ASHLEY/Supervisory Patent Examiner, Art Unit 3724
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Prosecution Timeline

May 31, 2024
Application Filed
Dec 11, 2025
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12539635
FOOD PRODUCT SLICING APPARATUS HAVING A PRODUCT GATE ASSEMBLY AND METHOD OF OPERATING SAME
2y 5m to grant Granted Feb 03, 2026
Study what changed to get past this examiner. Based on 1 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
20%
Grant Probability
0%
With Interview (-20.0%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 5 resolved cases by this examiner. Grant probability derived from career allow rate.

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