Prosecution Insights
Last updated: April 19, 2026
Application No. 17/777,961

FILTER DEVICE AND STEERING CONTROL DEVICE

Non-Final OA §101§103§112
Filed
May 18, 2022
Examiner
IMTIAZ, ZOHEB S
Art Unit
2846
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
HL Mando Corporation
OA Round
5 (Non-Final)
80%
Grant Probability
Favorable
5-6
OA Rounds
2y 5m
To Grant
94%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
369 granted / 460 resolved
+12.2% vs TC avg
Moderate +14% lift
Without
With
+14.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
25 currently pending
Career history
485
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
55.8%
+15.8% vs TC avg
§102
30.5%
-9.5% vs TC avg
§112
10.9%
-29.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 460 resolved cases

Office Action

§101 §103 §112
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 1/16/2026 has been entered. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. the claimed invention is directed to non-statutory subject matter. The claims 1-20 not fall within at least one of the four categories of patent eligible subject matter because “empty groove” isn’t found in the original specification and it is prohibited from being added later. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claims contain subject matter “empty groove” which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. 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 1-8 are rejected under 35 U.S.C. 103 as being unpatentable over Yokozutsumi et al. US publication no.: US 2015/0357988 A1 in view of Kang Doo won et al. JP 2015/122311. Regarding claim 1, Yokozutsumi et al. teach, A filter device for filtering noise, including a capacitor unit (capacitors Cs, figure 2) and a short-circuit prevention unit (Rs, figure 2), wherein the capacitor unit and the short-circuit prevention unit are connected in series on a single same current path (see figure 2 where the capacitance is connected to the resistor in series), and wherein when the capacitor unit is short-circuited, the short-circuit prevention unit blocks a short-circuit current by changing an impedance formed through the capacitor unit and the short-circuit prevention unit connected in series on the single same current path (see figures 1-2 and paragraph 63 that the fuse blocks the short-circuit current flowing through the capacitor) Yokozutsumi et al. teach that the short-circuit prevention unit has a Resistor S as seen in figures 1-2 is silent on specifically teaching : wherein the short-circuit prevention unit comprises a resistor having a resistor body in which an empty groove is formed, and is configured to be fusible in response to the short-circuit current such that a portion of the resistor body around the empty groove of the resistor body is meltable by the short-circuit current. However, Kang Doo won teaches: wherein the short-circuit prevention unit comprises a resistor having a resistor body in which an empty groove is formed, and is configured to be fusible in response to the short-circuit current such that a portion of the resistor body surrounding the empty groove of the resistor body is meltable by the short-circuit current (fuse resistor 100 which includes a “resistor body” encompassing all of the elements of the fuse resistor 100. Examiner is interpretating the claim language wherein the short circuit prevention unit comprising a resistor having a resistor body as element 100 (emphasis added). Thermal fuse 140 is part of the resistor body and it can be seen in paragraphs 53 and 59 and figure 3a that it forms receiving groove 157. The purpose of groove is to provide a space where the fuse can be melted and it also serves the same purpose as the claimed invention). In view of Kang doo won’s teachings, it would’ve been obvious to one with the ordinary skills in the art, before the effective filing date of the invention, with the apparatus as taught by Yokozutsumi et al. to include; wherein the short-circuit prevention unit comprises a resistor having a resistor body in which an empty groove is formed, and is configured to be fusible in response to the short-circuit current such that a portion of the resistor body surrounding the empty groove of the resistor body is meltable by the short-circuit current, for the purpose of protecting the circuit. Regarding claim 2, Yokozutsumi et al. teach, the filter device of claim 1, wherein the capacitor unit includes a capacitor (capacitor 52b, figures 1-2), and the resistor of the short-circuit prevention unit is (Resistor Rs, figure 2) connected in series to the capacitor. Regarding claim 3, Yokozutsumi et al. teach, the filter device of claim 2, wherein when the capacitor of the capacitor unit is short-circuited, the resistor of the short-circuit prevention unit blocks the short-circuit current as a resistance is changed to increase the impedance of the capacitor unit and the short-circuit prevention unit connected in series(see figures 1-2 and and paragraph 63 that the fuse blocks the short-circuit current flowing through the capacitor). Regarding claim 4, Yokozutsumi et al. teach, The filter device of claim 3, wherein the resistor of the short-circuit prevention unit is fused after the resistance gradually increases with respect to a first resistance (see paragraph 40, where the first resistance value or Rs is considered to be ignored and very small). Regarding claim 5, Yokozutsumi et al. teach, The filter device of claim 4, wherein the first resistance is 0 Ω (see paragraph 40, where the first resistance value or Rs is considered to be ignored and very small). Regarding claim 6, Yokozutsumi et al. teach, The filter device of claim 5, wherein when the capacitor of the capacitor unit is not short-circuited, the noise is filtered through the capacitor of the capacitor unit and the resistor with 0 Ω of the short-circuit prevention unit (see paragraph 32 where the filter device removes a noise current generated by the inverter and prevents the noise current from flowing out to the overhead line) . Regarding claim 7, Yokozutsumi et al. teach, The filter device of claim 1, further comprising at least one of an inductor unit including an inductor (reactor l2, figure 2) Yokozutsumi et al. teach a resistor as seen in figure 1 but is silent on specifically teaching and a resistor unit including another resistor. However, having multiple resistors could’ve been easily configured by one with the ordinary skills in the art, before the effective filing date of the invention, with the apparatus as taught by Yokozutsumi et al. as it is merely a replication of part and would provide further circuit protection. Regarding claim 8, Yokozutsumi et al. teach, The filter device of claim 7, wherein when the capacitor unit includes a first capacitor unit and a second capacitor unit (see capacitor Cs, C1, figure 2), and the filter device further includes the inductor unit (L2 L1, figure 2), the first capacitor unit, the second capacitor unit, and the inductor unit constitute a π-shaped LC filter (see figure 2, where the capacitor and reactors form a pi shaped LC filter). Claims 9-20 are rejected under 35 U.S.C. 103 as being unpatentable over Urimoto et al. US publication no.: US 2019/0016373 A1 in view of Yokozutsumi et al. US publication no.: US 2015/0357988 A1 and Kang Doo won et al. JP 2015/122311 Regarding claim 9, Urimoto et al. teach, A steering control device, comprising: and a steering motor power supply unit converting the filtered electrical energy based on a steering motor control signal to generate an assist steering force, and controlling a steering motor based on the assist steering force (see figure 1 and claim 1) Urimoto et al. is silent on specifically teaching: 1) a filter unit filtering noise of electrical energy; wherein the filter unit includes a capacitor unit and a short-circuit prevention unit which are connected in series on a single same current path, and wherein when the capacitor unit is short-circuited, the short-circuit prevention unit blocks a short-circuit current by changing an impedance formed through the capacitor unit and the short-circuit prevention unit connected in series on the single same current path; 2) wherein the short-circuit prevention unit comprises a resistor having a resistor body in which a groove is formed, and is configured to be fusible in response to the short-circuit current such that a portion of the resistor body around the groove of the resistor body is meltable by the short-circuit current. 1) Yokozutsumi et al. teach: a filter unit filtering noise of electrical energy (see filter 5, figures 1-2) ; wherein the filter unit includes a capacitor unit and a short-circuit prevention unit which are connected in series on a single same current path (see resistor Rs and Capacitor 52b), and wherein when the capacitor unit is short-circuited, the short-circuit prevention unit blocks a short-circuit current by changing an impedance formed through the capacitor unit and the short-circuit prevention unit connected in series on the single same current path (see figures 1-2 and paragraph 63 that the fuse blocks the short-circuit current flowing through the capacitor). In view of Yokozutsumi et al.’s teachings, it would’ve been obvious to one with the ordinary skills in the art, before the effective filing date of the invention, with the apparatus as taught by Urimoto et al. to include; a filter unit filtering noise of electrical energy; wherein the filter unit includes a capacitor unit and a short-circuit prevention unit which are connected in series on a single same current path, and wherein when the capacitor unit is short-circuited, the short-circuit prevention unit blocks a short-circuit current by changing an impedance formed through the capacitor unit and the short-circuit prevention unit connected in series on the single same current path, for the purpose of improving the control of the drive system. However, Kang Doo won teaches: wherein the short-circuit prevention unit comprises a resistor having a resistor body in which an empty groove is formed, and is configured to be fusible in response to the short-circuit current such that a portion of the resistor body surrounding the empty groove of the resistor body is meltable by the short-circuit current (fuse resistor 100 which includes a “resistor body” encompassing all of the elements of the fuse resistor 100. Examiner is interpretating the claim language wherein the short circuit prevention unit comprising a resistor having a resistor body as element 100 (emphasis added). Thermal fuse 140 is part of the resistor body and it can be seen in paragraphs 53 and 59 and figure 3a that it forms receiving groove 157. The purpose of groove is to provide a space where the fuse can be melted and it also serves the same purpose as the claimed invention). In view of Kang doo won’s teachings, it would’ve been obvious to one with the ordinary skills in the art, before the effective filing date of the invention, with the apparatus as taught by Yokozutsumi et al. to include; wherein the short-circuit prevention unit comprises a resistor having a resistor body in which an empty groove is formed, and is configured to be fusible in response to the short-circuit current such that a portion of the resistor body surrounding the empty groove of the resistor body is meltable by the short-circuit current, for the purpose of protecting the circuit. Regarding claim 10, Yokozutsumi et al. teach, the filter device of claim 1, wherein the capacitor unit includes a capacitor (capacitor 52b, figures 1-2), and the resistor of the short-circuit prevention unit is (Resistor Rs, figure 2) connected in series to the capacitor. Regarding claim 11, Yokozutsumi et al. teach, the steering control device of claim 10, wherein when the capacitor of the capacitor unit is short-circuited, the resistor of the short-circuit prevention unit blocks the short- circuit current as a resistance is changed to increase the impedance of the capacitor unit and the short-circuit prevention unit connected in series (see figures 1-2 and paragraph 63 that the fuse blocks the short-circuit current flowing through the capacitor). Regarding claim 12, Yokozutsumi et al. teach, The steering control device of claim 11, wherein the resistor of the short- circuit prevention unit is fused after the resistance gradually increases with respect to a first resistance (see paragraph 40, where the first resistance value or Rs is considered to be ignored and very small). Regarding claim 13, Yokozutsumi et al. teach, The steering control device of claim 12, wherein the first resistance is 0 Ω (see paragraph 40, where the first resistance value or Rs is considered to be ignored and very small). Regarding claim 14, Yokozutsumi et al. teach, The steering control device of claim 13, wherein when the capacitor of the capacitor unit is not short-circuited, the noise is filtered through the capacitor of the capacitor unit and the resistor with 0 Ω of the short-circuit prevention unit (see paragraph 32 where the filter device removes a noise current generated by the inverter and prevents the noise current from flowing out to the overhead line) . Regarding claim 15, Yokozutsumi et al. teach, The steering control device of claim 9, wherein the filter unit further includes at least one of an inductor unit including an inductor (reactor l2, figure 2) Yokozutsumi et al. teach a resistor as seen in figure 1 but is silent on specifically teaching and a resistor unit including another resistor. However, having multiple resistors could’ve been easily configured by one with the ordinary skills in the art, before the effective filing date of the invention, with the apparatus as taught by Yokozutsumi et al. as it is merely a replication of part and would provide further circuit protection. Regarding claim 16, Yokozutsumi et al. teach, The steering control device of claim 15, wherein when the capacitor unit includes a first capacitor unit and a second capacitor unit (see capacitor Cs, C1, figure 2), and the filter unit further includes the inductor unit, the first capacitor unit, the second capacitor unit, and the inductor unit constitute a π-shaped LC filter (see figure 2, where the capacitor and reactors form a pi shaped LC filter). Regarding claim 17, Yokozutsumi et al. teach, The filter device of claim 1, further comprising another capacitor unit and another short-circuit prevention unit connected in series with each other and connected in parallel to the capacitor unit and the short-circuit prevention unit (see figure 12); and an inductor unit connected to one terminal of the capacitor unit and one terminal of the another capacitor unit to constitute a i-shaped LC filter (see figure 2, where the capacitor and reactors form a pi shaped LC filter). Regarding claim 18, Yokozutsumi et al. teach, The filter device of claim 1, wherein the short-circuit prevention unit is configured to, when the capacitor unit is short-circuited, open the single same current path on which the capacitor unit and the short-circuit prevention unit are connected in series (see paragraph 75). Regarding claim 19, Yokozutsumi et al. teach, The steering control device of claim 9, further comprising another capacitor unit and another short-circuit prevention unit connected in series with each other and connected in parallel to the capacitor unit and the short-circuit prevention unit (see figure 12 and paragraph 75); and an inductor unit connected to one terminal of the capacitor unit and one terminal of the another capacitor unit to constitute a i-shaped LC filter (see figure 2, where the capacitor and reactors form a pi shaped LC filter). Regarding claim 20, Yokozutsumi et al. teach, The steering control device of claim 9, wherein the short-circuit prevention unit is configured to, when the capacitor unit is short-circuited, open the single same current path on which the capacitor unit and the short-circuit prevention unit are connected in series (see figure 12 and paragraphs 75-78). Response to Arguments Applicant's arguments filed 1/26/206 have been fully considered but they are not persuasive: Applicants argue that the references cited fail to specifically teach an “empty groove” as represented in figures 6-7. Figure 3a of Kang Doo discloses a groove 157, wherein, the examiner contends that the entire groove isn’t covered with the thermal fuse. There are some empty areas as seen in the figure 3a. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ZOHEB S IMTIAZ whose telephone number is (571)272-4308. The examiner can normally be reached 11am-730pm. 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, Eduardo Colon Santana can be reached at 571-272-2060. 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. /ZOHEB S IMTIAZ/ Primary Examiner , Art Unit 2846
Read full office action

Prosecution Timeline

May 18, 2022
Application Filed
Dec 29, 2023
Non-Final Rejection — §101, §103, §112
Mar 29, 2024
Response Filed
Jul 10, 2024
Final Rejection — §101, §103, §112
Oct 16, 2024
Notice of Allowance
Oct 16, 2024
Response after Non-Final Action
Nov 19, 2024
Response after Non-Final Action
Nov 26, 2024
Non-Final Rejection — §101, §103, §112
Feb 28, 2025
Response Filed
Mar 06, 2025
Final Rejection — §101, §103, §112
Jun 12, 2025
Response after Non-Final Action
Jun 12, 2025
Notice of Allowance
Jul 11, 2025
Response after Non-Final Action
Aug 14, 2025
Response after Non-Final Action
Oct 30, 2025
Response after Non-Final Action
Jan 26, 2026
Request for Continued Examination
Feb 03, 2026
Response after Non-Final Action
Feb 05, 2026
Non-Final Rejection — §101, §103, §112 (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

5-6
Expected OA Rounds
80%
Grant Probability
94%
With Interview (+14.3%)
2y 5m
Median Time to Grant
High
PTA Risk
Based on 460 resolved cases by this examiner. Grant probability derived from career allow rate.

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