Prosecution Insights
Last updated: July 17, 2026
Application No. 18/178,853

MAGNETIC SHEET, MULTILAYER MAGNETIC SHEET, AND METHOD FOR MANUFACTURING MAGNETIC SHEET

Non-Final OA §102§103§112
Filed
Mar 06, 2023
Priority
Apr 01, 2022 — JP 2022-061984
Examiner
NGUYEN, TUYEN T
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Proterial Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allowance Rate
1014 granted / 1245 resolved
+13.4% vs TC avg
Minimal +1% lift
Without
With
+0.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
57 currently pending
Career history
1306
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
82.5%
+42.5% vs TC avg
§102
5.6%
-34.4% vs TC avg
§112
5.8%
-34.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1245 resolved cases

Office Action

§102 §103 §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 . Election/Restrictions Applicant's election with and without traverse of Group I, Species I, Figures 1-2 in the reply filed on 2/12/2026 is acknowledged. The traversal is on the ground(s) that Figures 1-2 is a generic claim of Species I to III [figures 1-4]. This is found persuasive and claims 1-5 will be examined herewith. The requirement is still deemed proper and is therefore made FINAL. 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 1-5 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. Regarding claim 1, applicant should clarify the structure and/or arrangement of the fixing tape intended by “wherein the fixing tape is a tape that fixes an end portion in a longitudinal direction of the magnetic ribbon in the first magnetic sheet and an end portion in a longitudinal direction of the magnetic ribbon in the second magnetic sheet in a state where the end portions are adjacent to each other with a distance equal to or less than a predetermined value, and that is bonded over the resin sheet in the first magnetic sheet and the resin sheet in the second magnetic sheet.” Claims 2-5 inherit the defect of the parent 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)(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. Claim(s) 1, as best understood in view of the rejection under 35 USC 112 second paragraph, is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Kawai [JP 2005-203564 A]. Regarding claims 1-2, Kawai discloses a magnetic sheet [figure 1] comprising: - a first magnetic sheet [10]; - a second magnetic sheet [10]; and - a fixing tape [20], wherein each of the first magnetic sheet and the second magnetic sheet includes: an adhesive layer [13] including a support formed in a band shape and an adhesive provided on a first surface and a second surface of the support, a magnetic ribbon [11] that is formed in a band shape using a magnetic material and is bonded to the adhesive on the first surface of the adhesive layer, and a resin sheet [PET film 14, 15] that is formed in a band shape using a resin material and is disposed on the adhesive on the second surface of the adhesive layer, and wherein the fixing tape is a tape that fixes an end portion in a longitudinal direction of the magnetic ribbon in the first magnetic sheet and an end portion in a longitudinal direction of the magnetic ribbon in the second magnetic sheet in a state where the end portions are adjacent to each other with a distance equal to or less than a predetermined value [figure 1], and that is bonded over the resin sheet in the first magnetic sheet and the resin sheet in the second magnetic sheet [figures 1-2], wherein an end portion of the first magnetic sheet and an end portion of the second magnetic sheet have a shape extending linearly as viewed from a layering direction of the magnetic ribbon and the adhesive layer [figure 2]. Regarding claim 4, Kawai disclose the use of amorphous metal material for the magnetic ribbon [11]. 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. Claim(s) 5 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kawai in view of Nakahata et al. [WO 2019/168159 A1] Kawai disclose the instant claimed invention except for the magnetic ribbon is a ribbon formed of a nanocrystalline alloy and includes a plurality of small pieces. Nakahata et al. discloses a soft magnetic layer [12] formed of nanocrystal material including a plurality of small pieces [figure 3]. It would have been an obvious to one having ordinary skill in the art, before the effective filing date of the claimed invention, to use the magnetic layer of Nakahata et al. in Kawai for the purpose of suppressing of increasing in coercive force. Allowable Subject Matter Claim 3 would be allowable if rewritten 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 and to include all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: The prior art of record do not teach or disclose, in the claimed combination thereof, a width A as a dimension of the adhesive layer in a direction intersecting a longitudinal direction of the adhesive layer and width B as a dimension of the magnetic ribbon in a direction intersecting a longitudinal direction of the magnetic ribbon satisfy a relationship of 0.2 mm ≤ (width A -width B) ≤ 3 mm. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TUYEN T NGUYEN whose telephone number is (571)272-1996. The examiner can normally be reached Mon - Fri 8:30-5:30. 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, Shawki Ismail can be reached at 571-272-3985. 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. /TUYEN T NGUYEN/Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Mar 06, 2023
Application Filed
May 28, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12683065
COIL COMPONENT
3y 2m to grant Granted Jul 14, 2026
Patent 12665120
REACTOR, CONVERTER, AND POWER CONVERSION DEVICE
3y 9m to grant Granted Jun 23, 2026
Patent 12665121
Stationary Induction Electric Apparatus
3y 7m to grant Granted Jun 23, 2026
Patent 12665124
COIL COMPONENT
3y 5m to grant Granted Jun 23, 2026
Patent 12658353
REACTOR, CONVERTER, AND POWER CONVERSION DEVICE
3y 9m to grant Granted Jun 16, 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

1-2
Expected OA Rounds
81%
Grant Probability
82%
With Interview (+0.9%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1245 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