Prosecution Insights
Last updated: July 17, 2026
Application No. 19/099,559

SHEET-SHAPED MAGNETIC MEMBER

Non-Final OA §102§112
Filed
Jan 29, 2025
Priority
Jul 29, 2022 — JP 2022-121759 +1 more
Examiner
WANG, XIAOBEI
Art Unit
Tech Center
Assignee
Proterial Ltd.
OA Round
1 (Non-Final)
65%
Grant Probability
Favorable
1-2
OA Rounds
1y 9m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allowance Rate
437 granted / 671 resolved
+5.1% vs TC avg
Strong +48% interview lift
Without
With
+48.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
42 currently pending
Career history
716
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
85.7%
+45.7% vs TC avg
§102
4.8%
-35.2% vs TC avg
§112
7.8%
-32.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 671 resolved cases

Office Action

§102 §112
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 § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-16 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites “the plurality of magnetic sheet pieces are radially arranged with one end side facing a center side”. This limitation is indefinite. It is unclear what is a “center side”. The center of an object is not referred to as a “side”. For purposes of examination, “side” has been afforded no patentable weight. Claim 11 recites: “angle of the intersecting”. This limitation lacks sufficient antecedent basis. For purposes of examination, it is presumed to be “angle of the intersection”. Claim 14 recites “a normal line of the coil in a portion facing the magnetic ribbon”. This limitation is indefinite because it is not clear how the normal line of the coil is determined. One of ordinary skill in the art would understand the normal line is perpendicular to the coil. However, it is unclear whether this means the normal line is perpendicular to the curves of the coil (e.g., assuming the coil is a circle, the normal line is an extension of a radius), or whether the normal line is perpendicular to the magnetic ribbon, because the normal line of the coil is one “facing the magnetic ribbon”. For purposes of examination, the former is presumed. Dependent claims not addressed are indefinite by virtue of dependence from an indefinite claim. 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 1-13 are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by Kyeong et al. (US 2018/0286575). PNG media_image1.png 250 292 media_image1.png Greyscale Regarding claims 1-2, Kyeong teaches a magnetic sheet including two pairs of regions disposed alternately around a center point (¶ 65), thus they are radially arranged. The magnetic sheet has a shape that may be rectangular, circular, oval shape, or rhombic (¶ 64). The regions thus would have triangular shapes and correspond to the claimed “magnetic sheet pieces each formed in an elongated shape”. Furthermore, the corners of the triangular shapes meet at the center, so the width increases in the longitudinal direction and the regions have one side facing outward and the other facing the center. The regions have magnetic easy axes (¶ 67). This implicitly discloses an anisotropy as the regions have one axis which is “magnetic easy”; therefore, other axes are not. Kyeong teaches an embodiment where the magnetic easy axes run along the width of the regions (¶ 67, see also Fig. 4). The square shape of the sheet in Fig. 4 is for simplicity (¶ 64). Regarding claims 3 and 6-7, Kyeong teaches the magnetic sheets are formed by stacking multiple sheets with adhesive in between (¶ 56). Accordingly, there are first and second sheets of magnetic sheet pieces radially arranged. Additionally, these pieces are at different positions as they are on top of each other. Regarding claim 4, Kyeong teaches the magnetic sheet may be a nanocrystalline alloy ribbon (¶ 57). Regarding claim 5, this claim recites a product by process limitation. Even though product-by-process claims are limited by and defined by the process, determination of patentability is based on the product itself. The patentability of a product does not depend on its method of production. If the product in the product-by-process claim is the same as or obvious from a product of the prior art, the claim is unpatentable even though the prior product was made by a different process. See MPEP 2113. It is unclear what structure would be present in the magnetic ribbons produced by the recited product by process limitation, beyond the possibility that the magnetic ribbon contains an amorphous phase. Kyeong teaches the magnetic ribbon may be amorphous (¶ 57). Accordingly, Kyeong is considered to anticipate claim 5. Regarding claim 8, Kyeong teaches a magnetic sheet including two pairs of regions disposed alternately around a center point (¶ 65), thus they are radially arranged to make up the magnetic sheet and the sheet has an area larger than each of the regions. The magnetic sheet has a shape that may be rectangular, circular, oval shape, or rhombic (¶ 64). The regions thus would have triangular shapes and correspond to the claimed “magnetic sheet pieces each formed in an elongated shape”. Furthermore, the corners of the triangular shapes meet at the center, so the width increases in the longitudinal direction and the regions have one side facing outward and the other facing the center. The regions have magnetic easy axes (¶ 67). This implicitly discloses an anisotropy as the regions have one axis which is “magnetic easy”; therefore, other axes, including those perpendicular to the magnetic easy axis, are not. Magnetic permeability is presumed to be the same as the “magnetic easy” in Kyeong. Kyeong also teaches an embodiment where the magnetic easy axes run along the width PNG media_image2.png 252 301 media_image2.png Greyscale of the regions (¶ 67, see also Fig. 4). The magnetic easy axes are tangential to the spirals of a circular coil disposed near the magnetic sheet (see Fig. 9), thus the angle between the direction of the magnetic flux and the magnetic easy axes is 0 (as they would be tangent to each other). Regarding claim 9, Kyeong teaches the magnetic sheets are formed by stacking multiple sheets (¶ 56). Regarding claim 10, Kyeong teaches the magnetic sheet may be a nanocrystalline alloy ribbon (¶ 57). Regarding claim 11, Kyeong teaches a magnetic sheet including two pairs of regions disposed alternately around a center point (¶ 65), thus they are radially arranged to make up the magnetic sheet and the sheet has an area larger than each of the regions. The magnetic sheet has a shape that may be rectangular, circular, oval shape, or rhombic (¶ 64). The regions thus would have triangular shapes and correspond to the claimed “magnetic sheet pieces each formed in an elongated shape”. Furthermore, the corners of the triangular shapes meet at the center, so the width increases in the longitudinal direction and the regions have one side facing outward and the other facing the center. The regions have magnetic easy axes (¶ 67). This implicitly discloses an anisotropy as the regions have one axis which is “magnetic easy”; therefore, other axes, including those perpendicular to the magnetic easy axis, are not. Magnetic permeability is presumed to be the same as the “magnetic easy” in Kyeong. Kyeong also teaches an embodiment where the magnetic easy axes run along the width of the regions (¶ 67, see also Fig. 4). The magnetic easy axes are tangential to the spirals of a circular coil disposed near the magnetic sheet (see Fig. 9). The coil carries current, thus the angle between the current and the magnetic easy axes is 0 (as they would be tangent to each other). Regarding claim 12, Kyeong teaches the magnetic sheets are formed by stacking multiple sheets (¶ 56). Regarding claim 13, Kyeong teaches the magnetic sheet may be a nanocrystalline alloy ribbon (¶ 57). Allowable Subject Matter Claims 14-16 appear to be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. The prior art of record does not teach or suggest the claimed sheet-shaped magnetic member having the claimed angle between a direction of anisotropy of magnetic ribbons making up the magnetic member, and a normal line of a coil disposed near the magnetic member, as claimed. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Kuriyama et al. (US 2025/0227905) discloses a sheet-shaped magnetic member having elongated magnetic ribbons. However, Kuriyama is disqualified as prior art under 35 U.S.C. 102(b)(2). Huang et al. (CN 115394761) discloses magnetic strips arranged radially around a point. However, these strips are not arranged so as to form a sheet-shaped magnetic member. Any inquiry concerning this communication or earlier communications from the examiner should be directed to XIAOBEI WANG whose telephone number is (571)270-5705. The examiner can normally be reached M-F 8AM-5PM 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, Humera Sheikh can be reached at 571-272-0604. 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. /XIAOBEI WANG/Primary Examiner, Art Unit 1784
Read full office action

Prosecution Timeline

Jan 29, 2025
Application Filed
Jun 25, 2026
Non-Final Rejection mailed — §102, §112 (current)

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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
65%
Grant Probability
99%
With Interview (+48.3%)
3y 2m (~1y 9m remaining)
Median Time to Grant
Low
PTA Risk
Based on 671 resolved cases by this examiner. Grant probability derived from career allowance rate.

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