Prosecution Insights
Last updated: April 19, 2026
Application No. 18/165,447

MAGNETIC PROPERTY MEASURING SYSTEM, A METHOD FOR MEASURING MAGNETIC PROPERTIES, AND A METHOD FOR MANUFACTURING A MAGNETIC MEMORY DEVICE USING THE SAME

Non-Final OA §103
Filed
Feb 07, 2023
Examiner
NGUYEN, THANH T
Art Unit
2893
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Samsung Electronics Co., Ltd.
OA Round
2 (Non-Final)
83%
Grant Probability
Favorable
2-3
OA Rounds
2y 10m
To Grant
97%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
1162 granted / 1397 resolved
+15.2% vs TC avg
Moderate +14% lift
Without
With
+13.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
39 currently pending
Career history
1436
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
51.7%
+11.7% vs TC avg
§102
28.1%
-11.9% vs TC avg
§112
5.8%
-34.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1397 resolved cases

Office Action

§103
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 . DETAILED ACTION Response to Arguments Applicant’s arguments, filed 12/23/25, with respect to the rejection(s) of claim(s) 1-10 under 35 U.S.C. 102 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of Wang et al.. 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 (i.e., changing from AIA to pre-AIA ) 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, 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 for establishing a background for determining obviousness under 35 U.S.C. 103 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. Claim(s) 1-10 is/are rejected under 35 U.S.C. 103 as being unpatentable over NOH et al. (U.S. Patent Publication No. 2019/0295616) in view of WANG et al. (U.S. Patent Publication No. 2019/0025196). Referring to figures 1-15, NOH et al. teaches a method of measuring magnetic properties, the method comprising: loading a sample (10) on a stage; fixing the sample on the stage (20); moving a measurement target region of the sample to a light irradiation region (20, see paragraph# 24, figure 1); irradiating incident light (30) to the measurement target region of the sample (10, see paragraph# 24); and detecting polarization of reflected light that is reflected from the measurement target region of the s fixing the sample on the stage by using a vacuum ample (see paragraphs# 28+). However, the reference does not clearly teach fixing the sample on the stage by using a vacuum. WANG et al. teaches fixing the sample on the stage by using a vacuum (see paragraph# 36, figure 2). Therefore, it would have been obvious to a person of ordinary skill in the requisite art at the time of the invention was filed would fixing the sample on the stage by using a vacuum in NOH et al. as taught by WANG et al. because it is known in the semiconductor art to keep the sample flat, stable, precisely aligned and thermally controlled. Regarding to claim 2, the moving the measurement target region of the sample to the light irradiation region includes moving the stage in a first direction and in a second direction (see paragraph# 26, figure 1). Regarding to claim 3, wherein each of the first direction and the second direction is substantially parallel to a top surface of the sample, and the first direction is substantially perpendicular to the second direction (see figure 1, paragraphs# 26-27). Regarding to claim 4, applying a magnetic field substantially perpendicularly to a top surface of the sample (see figure 1, paragraphs# 26-27). Regarding to claim 5, polarizing the incident light that is emitted from a light source; and polarizing the reflected light (see figure 1, paragraphs# 26-30). Regarding to claim 6, the fixing the sample (10) on the stage by using the vacuum includes drawing or sucking air through a plurality of holes (20, chamber). Regarding to claim 7, a method for manufacturing a magnetic memory device, the method comprising: forming a magnetic tunnel junction layer (ML)on a substrate (100); patterning the magnetic tunnel junction layer to form magnetic tunnel junction patterns; measuring magnetic properties of the magnetic tunnel junction patterns (ML1, Ml2, see paragraphs# 36+); and determining whether the measured magnetic properties of the magnetic tunnel junction patterns are within an allowable range, wherein the measuring the magnetic properties of the magnetic tunnel junction patterns comprises: loading the substrate (100) on a stage in a magnetic property measuring system (see paragraphs# 39+, figure 1); fixing the substrate (100 (10)) on the stage (see figure 1-2, 5); moving a measurement target region of the substrate to a light irradiation region (10/100, see figures 1, 2, paragraph# 24, 41); irradiating incident light (30) to the measurement target region of the substrate (10/100, see figure 1, 2, paragraph# 24, 41); and detecting polarization of light that is reflected from the measurement target region of the substrate (see paragraphs# 42+). However, the reference does not clearly teach fixing the sample on the stage by using a vacuum. WANG et al. teaches fixing the sample on the stage by using a vacuum (see paragraph# 36, figure 2). Therefore, it would have been obvious to a person of ordinary skill in the requisite art at the time of the invention was filed would fixing the sample on the stage by using a vacuum in NOH et al. as taught by WANG et al. because it is known in the semiconductor art to keep the sample flat, stable, precisely aligned and thermally controlled. Regarding to claim 8, the moving the measurement target region of the substrate to the light irradiation region includes moving the stage in a first direction and in a second direction (see paragraph# 26+, figures 1, 2). Regarding to claim 9, wherein each of the first direction and the second direction is substantially parallel to a top surface of the substrate (see figures 1, 2, paragraphs# 26, 56). Regarding to claim 10, the first direction is substantially perpendicular to the second direction (see figures 1-2, paragraphs# 37+). Claim(s) 1-6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Pressesky et al. (U.S. Patent No. 9,348,000) in view of WANG et al. (U.S. Patent Publication No. 2019/0025196). Referring to figures 1-5, Pressesky et al. teaches a method of measuring magnetic properties, the method comprising: loading a sample (362) on a stage (see figure 3); fixing the sample on the stage by using a vacuum (100/300, system); moving a measurement target region of the sample to a light irradiation region (308, see figure 3); irradiating incident light (308) to the measurement target region of the sample (362, see figure 3); and detecting (350) polarization of reflected light that is reflected from the measurement target region of the sample (see col. 6, lines 8-37, figure 3). However, the reference does not clearly teach fixing the sample on the stage by using a vacuum. WANG et al. teaches fixing the sample on the stage by using a vacuum (see paragraph# 36, figure 2). Therefore, it would have been obvious to a person of ordinary skill in the requisite art at the time of the invention was filed would fixing the sample on the stage by using a vacuum in Pressesky et al. as taught by WANG et al. because it is known in the semiconductor art to keep the sample flat, stable, precisely aligned and thermally controlled. Regarding to claim 2, the moving the measurement target region of the sample to the light irradiation region (308) includes moving the stage in a first direction and in a second direction (see figure 3). Regarding to claim 3, wherein each of the first direction and the second direction is substantially parallel to a top surface of the sample, and the first direction is substantially perpendicular to the second direction (see figure 3). Regarding to claim 4, applying a magnetic field substantially perpendicularly to a top surface of the sample (see figure 3, col. 6, lines 25-30). Regarding to claim 5, polarizing the incident light that is emitted from a light source (108/308, see figures 1, 3); and polarizing the reflected light (see figure 3, col. 6, lines 8-37). Regarding to claim 6, the fixing the sample (112) on the stage by using the vacuum includes drawing or sucking air through a plurality of holes (100/300). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Thanh Nguyen whose telephone number is (571) 272-1695, or by Email via address Thanh.Nguyen@uspto.gov. The examiner can normally be reached on Monday-Thursday from 6:00AM to 3:30PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Yara Green, can be reached on (571) 270-3035. The fax phone number for this Group is (571) 273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pairdirect.uspto.gov. Should you have questions on access to thy Private PAIR system, contact the Electronic Business center (EBC) at 866-217-9197 (toll-free). /THANH T NGUYEN/Primary Examiner, Art Unit 2893
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Prosecution Timeline

Feb 07, 2023
Application Filed
Sep 22, 2025
Non-Final Rejection — §103
Oct 29, 2025
Interview Requested
Nov 05, 2025
Applicant Interview (Telephonic)
Nov 16, 2025
Examiner Interview Summary
Dec 23, 2025
Response Filed
Mar 31, 2026
Non-Final Rejection — §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

2-3
Expected OA Rounds
83%
Grant Probability
97%
With Interview (+13.9%)
2y 10m
Median Time to Grant
Moderate
PTA Risk
Based on 1397 resolved cases by this examiner. Grant probability derived from career allow rate.

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