Prosecution Insights
Last updated: April 19, 2026
Application No. 18/129,848

Method of inducing exchange bias by single step irradiation in a single FeRh thin film for use in magnetic tunnel junctions

Non-Final OA §102§103
Filed
Apr 01, 2023
Examiner
MILLER, JAMI VALENTINE
Art Unit
2818
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
The United States Government (Department of the Navy)
OA Round
1 (Non-Final)
95%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 95% — above average
95%
Career Allow Rate
1011 granted / 1067 resolved
+26.8% vs TC avg
Minimal +4% lift
Without
With
+3.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
23 currently pending
Career history
1090
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
27.2%
-12.8% vs TC avg
§102
45.6%
+5.6% vs TC avg
§112
24.4%
-15.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1067 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 . Status of Claims Claims 1-27 are pending in this application. Election/Restrictions Applicant’s election without traverse of Group II (Claims 13-27) in the reply filed on 4/1/23 is acknowledged. Claims 1-12 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to nonelected inventions, there being no allowable generic or linking claim. Claims 13-27 are examined in this Office action. Information Disclosure Statement Acknowledgment is made that the information disclosure statement has been received and considered by the examiner. If the applicant is aware of any prior art or any other co-pending applications not already of record, he/she is reminded of his/her duty under 37 CFR 1.56 to disclose the same. Drawings The drawings are objected to because figures 2, 5, 7, and 11 are informal. Specifically, the shading used in the figures makes it difficult to discern the features. This problem will be exacerbated in future reproductions. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of pre-AIA 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 13 and 16 are rejected under pre-AIA 35 U.S.C. 102(a)(1) as being anticipated by Bennet et al. (US Patent Application Publication No 2020/00395156) hereinafter referred to as Bennet. Per Claim 13 Bennet discloses a method to create a FM/AFM interface in a single layer of FeRh, comprising the steps of: providing a layer of FeRh film ([0030] also see figure 7); wherein the layer of FeRh film has a top portion and a bottom portion (as shown in fig. 7); wherein the layer of FeRh film is an antiferromagnetic (AFM) film [0030]; implanting ions into the top portion of the FeRh film (as described in [0030]); creating, via the step of implanting ions, a ferromagnetic (FM) region in the top region (i.e. direct write of ferromagnetic patterns); maintaining the antiferromagnetic (AFM) region of the bottom portion (Bennet teaches that the peak ionizing energy loss occurs within the top 50 nm of the film and decreases approximately linearly with depth [0064], hence inherently teaching that the bottom portion of the layer is not made ferromagnetic. Bennet also teaches that the film is 200 nm thick. see [0075]); and creating a FM/AFM interface in the single layer of FeRh. (this feature is inherently taught since an interface is a surface forming a common boundary of two phases. Boundaries between the FM and AFM layers are shown in figure 8, but also exist within the film beneath the ferromagnetic portion) Per Claim 16 Bennet discloses a method of inducing exchange bias by single step irradiation in a single FeRh film for use in a magnetic tunnel junction, comprising the steps of: providing a layer of MgO (shown in figure 7); growing an Epitaxial film of FeRh on the layer of MgO (shown in figure 7, see [0050]); and implanting ions (as discussed in [0030]). Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 of this title, 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 set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied for establishing a background for determining obviousness under pre-AIA 35 U.S.C. 103(a) 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim 15 are rejected under pre-AIA 35 U.S.C. 103 as being unpatentable over Bennet as applied to claims 13 above. Per Claim 15 Bennet discloses the method of claim 13 including the steps of: controlling via ion energy the thickness of the top portion. Figure 4 shows the relationship between the He+ dose and the Kerr Rotation (a measure of ferromagnetism). This clearly shows that an increase in He+ ions (and their associated energy) increases the ferromagnetism. It would be obvious to one of ordinary skill in the art to control the thickness of the top portion via the ion energy. Cited Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Applicants are directed to consider additional pertinent prior art included on the Notice of References Cited (PTOL 892) attached herewith. The Examiner has pointed out particular references contained in the prior art of record within the body of this action for the convenience of the Applicant. Although the specified citations are representative of the teachings in the art and are applied to the specific limitations within the individual claim, other passages and figures may apply. Allowable Subject Matter Claims 14 and 17-27 are 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAMI VALENTINE MILLER whose telephone number is (571)272-9786. The examiner can normally be reached on Monday-Thursday 7am-5pm. 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, Eva Montalvo can be reached on (571) 270-3829. 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. /Jami Valentine Miller/Primary Examiner, Art Unit 2818
Read full office action

Prosecution Timeline

Apr 01, 2023
Application Filed
Dec 12, 2025
Non-Final Rejection — §102, §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
95%
Grant Probability
99%
With Interview (+3.9%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 1067 resolved cases by this examiner. Grant probability derived from career allow rate.

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