Prosecution Insights
Last updated: October 25, 2026
Application No. 18/373,508

Method and device for detecting axial and/or radial magnetic fields acting relative to an axis

Final Rejection §102§103
Filed
Sep 27, 2023
Priority
Oct 06, 2022 — DE 102022125846.7
Examiner
GONZALEZ, MILTON
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Balluff GmbH
OA Round
3 (Final)
78%
Grant Probability
Favorable
4-5
OA Rounds
0m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
508 granted / 654 resolved
+9.7% vs TC avg
Moderate +13% lift
Without
With
+12.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
10 currently pending
Career history
673
Total Applications
across all art units

Statute-Specific Performance

§101
2.0%
-38.0% vs TC avg
§103
49.6%
+9.6% vs TC avg
§102
26.6%
-13.4% vs TC avg
§112
16.0%
-24.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 654 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 . Claim Objections Claim 10 is objected to because of the following informalities: In claim 10, a comma should be added after “claim 1”. Appropriate correction is required. 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. Claims 1, 4, 6, 8, and 10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Yoshida (JP 10-311214 A). Regarding claim 1, Yoshida discloses a device (see Fig. 1) for detecting axial and/or radial magnetic fields acting relative to an axis, comprising: at least two magnetic switch components (elements MR1, MR2, Figs. 1 and 2) arranged adjacent to one another along the axis (see Figs. 2 and 3); and an evaluation circuit (element 9, Fig. 2) for combining signals of the at least two magnetic switch components to form an output signal representing a switch-on and switch-off process (see par. [0026] and Figs. 1 and 4), wherein an OR-operation of the signals of the at least two magnetic switch components is performed in the evaluation circuit (see par. [0026] and Figs. 1 and 4); and wherein the at least two magnetic switch components are arranged along the axis with such a spacing that, when a magnet (element 3, Fig. 2) moves past the at least two magnetic switch components along the axis, a continuous output signal (i.e., output signal g, Fig. 4g) results from a combination of the signals of the at least two magnetic switch components which is independent of an orientation of the magnetic field (see par. [0026] and Figs. 1 and 4). Regarding claim 4, Yoshida discloses a device (see Fig. 1) for detecting axial and/or radial magnetic fields acting relative to an axis, said device comprising: at least two magnetic switch components (elements MR1, MR2, Figs. 1 and 2) are arranged adjacent to one another along the axis (see Figs. 2 and 3) and an evaluation circuit (element 9, Fig. 2) for combining the signals of the magnetic switch components to form an output signal (i.e., output signal g, Fig. 4g) representing a switch-on and switch-off process (see par. [0026] and Figs. 1 and 4), wherein in the evaluation circuit, a switch-on process is concluded if two rising edges of the signals of the magnetic switch components are detected and in that a switch-off process is concluded if two falling edges of the signals of the magnetic switch components are detected, a continuous output signal results from a combination of the signals which is independent of an orientation of the magnetic field (see par. [0026] and Figs. 1 and 4). Regarding claim 6, Yoshida discloses a method for detecting axial and/or radial magnetic fields acting relative to an axis, said method comprising the following steps: arranging at least two magnetic switch components (elements MR1, MR2, Figs. 1 and 2) adjacent to one another along the axis, combining output signals of the at least two magnetic switch components with one another by way of an OR operation to form an output signal (i.e., output signal g, Fig. 4g) representing a switch-on and switch-off process, the combined signals result in an output signal that is independent of an orientation of the magnetic field (see par. [0026] and Figs. 1 and 4), choosing spacing along the axis such that a path of the output signal is continuous when a magnet moves past the at least two magnetic switch components along the axis (see par. [0026] and Figs. 1 and 4). Regarding claim 8, Yoshida discloses a method, wherein the output signals of the at least two magnetic switch components are combined with one another in such a way that on identification of rising edges of the output signals of the at least two magnetic switch components, it is concluded that a switch-on process has occurred (see par. [0026] and Figs. 1 and 4) and that on detection of falling edges of the output signals of the at least two magnetic switch components, it is concluded that a switch-off process has occurred (see par. [0026] and Figs. 1 and 4), and an output signal representing this switch-on and switch-off process is output (see par. [0026] and Figs. 1 and 4). Regarding claim 10, Yoshida discloses a device, wherein the OR operation of the signals produces one switch-on point and one switch-off point resulting in one switching point for detecting a position (see par. [0026] and Figs. 1 and 4). 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. Claims 5 and 9 are rejected under 35 U.S.C. 103 as being unpatentable over Yoshida (JP 10-311214 A) in view of Shoji (US 2006/0202681). Regarding claim 5, even assuming, arguendo without conceding, that Yoshida does not disclose increasing a width of the continuous output signal, more than two magnetic switch components are arranged along the axis, Shoji shows that this feature is well known in the art. Shoji discloses a device, wherein to increase a width of the continuous output signal, more than two magnetic switch components are arranged along the axis (see par. [0074]). Therefore, it would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to apply a known technique to a known device ready for improvement to yield predictable results, such as improved resolution in position detection as taught by Shoji (see par. [0074]). Regarding claim 9, even assuming, arguendo without conceding, that Yoshida does not disclose the output signal width being adjusted by arranging more than two magnetic switch components along the axis, Shoji shows that this feature is well known in the art. Shoji discloses a device, wherein the output signal width is adjusted by arranging more than two magnetic switch components along the axis (see par. [0074]). Therefore, it would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to apply a known technique to a known device ready for improvement to yield predictable results, such as improved resolution in position detection as taught by Shoji (see par. [0074]). The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Gleixner et al. (US 5,241,267) discloses a rotation detector using differential Hall sensor circuitry. Baker et al. (US 4,533,902) discloses a precision angle transducer using nonprecision rotors. Response to Arguments Applicant's arguments filed 6/19/2026 have been fully considered but they are not persuasive. The applicant argues that “the Yoshida reference does not disclose a combined continuous signal from at least two magnetic switch components being independent of an orientation of the magnetic field”. The examiner respectfully disagrees. In the device of Yoshida, regardless of the orientation of the magnetic field generated by the magnet 3, the device will detect the magnetic flux density in the X-axis and Y-axis directions of the magnetic field. As shown in Figure 4 below, the OR operation in Yoshida produces switch-on and switch-off points based on reference voltages Vh and Vl. Consequently, as stated before, the device of Yoshida will perform these operations independent of the orientation of the magnetic field generated by the magnet 3. PNG media_image1.png 656 538 media_image1.png Greyscale THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to MILTON GONZALEZ whose telephone number is (571)270-7914. The examiner can normally be reached 8:00 AM - 5:00 PM. 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, WALTER LINDSAY can be reached at (571) 272-1674. 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. /WALTER L LINDSAY JR/Supervisory Patent Examiner, Art Unit 2852 /M.G/Examiner, Art Unit 2852 10/1/2026
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Prosecution Timeline

Sep 27, 2023
Application Filed
May 08, 2025
Non-Final Rejection mailed — §102, §103
Jul 29, 2025
Response Filed
Jul 29, 2025
Response after Non-Final Action
Oct 07, 2025
Response Filed
Apr 16, 2026
Non-Final Rejection mailed — §102, §103
Jun 19, 2026
Response Filed
Oct 08, 2026
Final Rejection mailed — §102, §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

4-5
Expected OA Rounds
78%
Grant Probability
90%
With Interview (+12.7%)
2y 5m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 654 resolved cases by this examiner. Grant probability derived from career allowance rate.

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