Prosecution Insights
Last updated: May 29, 2026
Application No. 18/023,168

NOVEL MULTIFFEROIC R-TYPE HEXAFERRITE, A COMPOSITE AND AN ARTICLE COMPRISING THE R-TYPE HEXAFERRITE, AND A METHOD OF MAKING THE SAME

Non-Final OA §103
Filed
Feb 24, 2023
Priority
Aug 31, 2020 — provisional 63/072,349 +1 more
Examiner
EDMONDSON, LYNNE RENEE
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Rogers Corporation
OA Round
3 (Non-Final)
71%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
87%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
555 granted / 781 resolved
+6.1% vs TC avg
Strong +16% interview lift
Without
With
+15.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
20 currently pending
Career history
811
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
62.9%
+22.9% vs TC avg
§102
3.7%
-36.3% vs TC avg
§112
5.2%
-34.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 781 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 3/2/26 has been entered. 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 instant claims contain the transitional phrase “comprising”. Per MPEP 2111.03 ‘The transitional term “comprising”, which is synonymous with “including,” “containing,” or “characterized by,” is inclusive or open-ended and does not exclude additional, unrecited elements or method steps'. This open-ended definition has been taken into consideration in the following rejections. Claims 17, 18, and 22 are rejected under 35 U.S.C. 103 as being unpatentable over US 2008/0149882 A1 to Terazono et al. (hereinafter Terazono). Regarding claims 17, 18 and 22, Terazono discloses a crystalline structure comprising a main crystal phase (55 to 95 vol%) of hexagonal Ba ferrite (para [0049]) selected from a group that includes Ba2M2Fe12O22 crystal, where M is at least one of Co, Cu and Zn (para [0020]) and a secondary phase (5-45 vol%) of a perovskite type crystal (para [0049]) selected from a group that includes BaTiO3 (para [0026]). This polycrystalline material comprising a main phase of Ba2M2Fe12O22 ferrite crystal and a secondary phase of BaTiO3 crystal overlaps Ba3M2TiFe12O25 and therefore overlaps instantly claimed formula: Me'3Me2TiFe12O25 wherein Me' is at least one of Ba2+ or Sr2+ and Me is at least one of Co2+, Mg2+, Cu2+, or Zn2+. See MPEP 2144.05(I), which states that ‘In the case where the claimed ranges "overlap or lie inside ranges disclosed by the prior art" a prima facie case of obviousness exists’. As the main phase (up to 95 vol%) is crystalline structure ferrite (hexagonal Ba ferrite, para [0049]), the crystalline structure is expected to be crystalline structure ferrite, absent evidence to the contrary. Response to Arguments Applicant’s arguments, see pages 5-8 filed 3/2/26, with respect to Terazono and the layered structure, have been fully considered and are persuasive. The reference does not teach or suggest the stacked/layered structure as set forth in the newly amended claims. Therefore, the 103 rejection of claims 1-8 and 10-16 as obvious over Terazono has been withdrawn. The 103 rejection of claim 9 as obvious over Terazono in view of Martinazzo has also been withdrawn. The 103 rejection of claims 19 and 20 as obvious over Terazono is moot because the claims have been canceled. Applicant's arguments filed 3/2/26, regarding claims 17 and 18, have been fully considered but they are not persuasive. Applicant argues that Terazono does not teach or suggest a hexagonal or crystallite structure ferrite having the instantly claimed formula Me'₃Me₂TiFe₁₂O₂₅ but rather teaches a solid solution of BaTiO3 and Ba2M2Fe12O22. However, the solid solution of Terazono is Ba3M2TiFe12O25. This formula is a ferrite comprising a main phase that is a ferrite Ba2M2Fe12O22 and a secondary/minor perovskite phase (para [0063]). Both are crystalline (para [0049]). Therefore, the 103 rejection of claims 17 and 18 as obvious over Terazono stands. Allowable Subject Matter Claims 1-16 are allowed. The following is an examiner’s statement of reasons for allowance: The newly amended claims recite a particular structure comprising a Me'TiO₃ layer between two Me'MeFe₆O₁₁ layers. The closest prior art, Terazono, does not teach or suggest such a layered structure. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Claim 21 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. The following is a statement of reasons for the indication of allowable subject matter: The closest prior art, Terazono, teaches a crystalline ferrite with an additional phase but does not teach a hexagonal ferrite crystalline structure as set forth in the new claim. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. “Epitaxial growth of Zn2 Y ferrites” by Kim et al. (recites Ba2.9Zn2.8Fe12O25 as a nonstoichiometric Y ferrite, page 3113), recited in the IDS filed 2/24/23 and Wikipedia, Hexagonal ferrites (https://en.wikipedia.org/wiki/Hexagonal_ferrite). Any inquiry concerning this communication or earlier communications from the examiner should be directed to LYNNE EDMONDSON whose telephone number is (571)272-2678. The examiner can normally be reached M-F 10-6:30. 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, Jonathan Johnson can be reached at 571-272-1177. 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. /L.E./Examiner, Art Unit 1734 /Matthew E. Hoban/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Show 2 earlier events
Nov 18, 2025
Applicant Interview (Telephonic)
Nov 18, 2025
Examiner Interview Summary
Nov 26, 2025
Response Filed
Dec 30, 2025
Final Rejection mailed — §103
Jan 23, 2026
Response after Non-Final Action
Mar 02, 2026
Request for Continued Examination
Mar 09, 2026
Response after Non-Final Action
Mar 19, 2026
Non-Final Rejection mailed — §103 (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

3-4
Expected OA Rounds
71%
Grant Probability
87%
With Interview (+15.6%)
3y 0m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 781 resolved cases by this examiner. Grant probability derived from career allowance rate.

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