Prosecution Insights
Last updated: October 02, 2026
Application No. 18/865,939

ELECTRICAL CIRCUIT FOR CONTROLLING POWER SUPPLY DEVICE IN AN ELECTRICAL DEVICE, AND ELECTRICAL DEVICE

Non-Final OA §102§103§112
Filed
Nov 14, 2024
Priority
May 18, 2022 — EU 22173948.5 +1 more
Examiner
PAUL, ANTONY M
Art Unit
Tech Center
Assignee
Hilti Aktiengesellschaft
OA Round
1 (Non-Final)
90%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 90% — above average
90%
Career Allowance Rate
590 granted / 658 resolved
+29.7% vs TC avg
Moderate +10% lift
Without
With
+9.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
17 currently pending
Career history
670
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
34.7%
-5.3% vs TC avg
§102
41.7%
+1.7% vs TC avg
§112
20.2%
-19.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 658 resolved cases

Office Action

§102 §103 §112
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 . Objection to Drawings The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the phrase (see claims 9-10), the third switching element is a diode must be shown or the feature(s) canceled from the claim(s). The output voltage U_B (stated in spec., see page 3, para. [0009], spec., pages 4-5, para. [0014]), the first voltage U1, second voltage U2 needs to be shown in applicant’s figs.1-2. Coil 26 (see spec., page 7, para. [0026]) needs to be referenced. No new matter should be entered. 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. Objection to Specification The disclosure is objected to because of the following informalities: (see spec., pages 4-5, para. [0014], Claims 9-10) state the phrase “the third switching element act as a boost switching element or boost diode” must be shown and referenced in spec. The phrase, “the second switching element 24 (fig.1) is configured to bypass the second power supply device 18 and the coil 26 (see spec., para. [0013], figs.1-2) is not clear as the second switching element 24 is shown connected to the second power supply device 18 and the coil 26. Appropriate correction is required in specification. Claim Rejections – 35 USC § 112 4. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 9-10 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. As to claims 9-10, state the phrase “the third switching element a “diode” is not clear as the diode is not shown in applicant’s figs.1-2 and must be shown and referenced in spec. for proper understanding of the invention. 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. Claim(s) 7, 11, 12 and 13 are rejected under 35 U.S.C. 102 (a)(1) as being anticipated by Tse (Pub.No.: US 2010/0213897 A1). Claim 7 (new): An electrical circuit for controlling a power draw from a first power supply device and from a second power supply device in an electrical device, in particular in a power tool, the electrical circuit comprising: a first power supply device; and a second power supply device; a first switching element; a second switching element; a third switching element; a coil; and two connection points, the coil connected in series with the first power supply device and the second power supply device, the first switching element being configured to bridge the first power supply device and the coil, and the second switching element being configured to bridge the second power supply device and the coil, an output voltage of the electrical circuit present at the two connection points being greater than a sum of a first voltage of the first power supply device and a second voltage of the second power supply device. (As to claim 7, Tse teaches (figs.1-13, para. [0003]) an electrical circuit [50a/70/80] (figs.5a, 5, 7-8, 11) for controlling (via control unit 57/79 (fig.5/7) a power draw from a first power supply device 56/77/87 (fig.5/7/8) and from a second power supply device 56/78/88 (fig.5/7/8) in an electrical device [Battery Cell converter/BCC unit] (see figs.5, 5a, 7-13, para’s [0019], [0020], [0022], [0023], [0028]-[0032] & [0046]), in particular in a power tool (see para. [0005]), the electrical circuit 50a/70/80 (figs.5a, 5, 7-8, 11) comprising: a first power supply device 56/77/87 (figs.5, 7, 8); and a second power supply device 56/78/88 (figs.5, 7, 8); a first switching element 55/75/85 (figs.5, 7, 8); a second switching element 55/76/86 (figs.5, 7, 8); a third switching element 55/73/83 (figs.5, 7, 8); a coil 71/81 (figs.7, 8); and two connection points [53, 51] or Vout connections (see figs.5, 7, 8), the coil 71 connected in series with the first power supply device 77/87 and the second power supply device 78/88 (see figs.7, 8), the first switching element 75/85 being configured to bridge the first power supply device 77/87 and the coil 71/81 (see figs.7, 8), and the second switching element 76/86 being configured to bridge the second power supply device 78/88 and the coil 71/81 (figs.7-8), an output voltage Vo of the electrical circuit 70/80 present at the two connection points (via Vo) being greater than a sum of a first voltage of the first power supply device 55/77/87 and a second voltage of the second power supply device 55/78/88 (Vo can be larger than Vb, wherein Vb is voltage across battery cells, see Tse teaching, para. [0035]; High output voltage such as 48V or higher, see Tse teaching, para. [0047], sum of battery cell units voltages V1+V2+V3+V4, see figs.11-12, 12a, para. [0005], battery cells integrated dc-dc/up converter, boost DC/DC converters, see figs.6-7, para’s [0021], [0038]-[0039], can step up voltages of battery cells (77, 78, fig.7); series stack of BCC’s achieve high effective converter output voltage, see abstract). Claim 11 (new): The electrical circuit as recited in claim 7 wherein the third switching element is configured to switch a state of the electrical circuit on or off. (As to claim 11, Tse teaches (figs.1-13, para. [0003]) an electrical circuit 50a/70/80] (figs.5a, 5, 7-8, 11) wherein the third switching element 55/64/73/83 (figs.5/6a/7/8, para’s [0035], [0038]) is configured to switch a state of the electrical circuit on/connect or off/disconnect). Claim 12 (new): An electrical device comprising the electrical circuit as recited in claim 7. (As to claim 12, Tse teaches (figs.1-13, para. [0003]) an electrical device [Battery Cell converter/BCC system] (para. [0033]) comprising the electrical circuit [50a/70/80] (figs.5a, 5, 7-8, 11, para’s [0019], [0020], [0022], [0023], [0028]-[0032], [0035] & [0039]). Claim 13 (new): The electrical device as recited in claim 12 wherein the electrical device is a power tool. (As to claim 13, Tse teaches (figs.1-13, para. [0003]) an electrical device [Battery Cell converter/BCC system] (para. [0033]) is a power tool (see para. [0005]). 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 8, 9 and 10 are rejected under 35 U.S.C. 103 as being unpatentable over Tse (Pub.No.: US 2010/0213897 A1) in view of KUBOTA (Pub.No.: US 2018/0233787 A1). Claim 8 (new): The electrical circuit as recited in claim 7 wherein the first switching element or second switching element is a MOSFET. (As to claim 8, Tse teaches (figs.1-13, para. [0003]) an electrical circuit 50a/70/80] (figs.5a, 5, 7-8, 11), wherein having a first switching element 55/75/85 (figs.5, 7, 8) or a a second switching element 55/76/86. Tse do not mention switching element is a MOSFET. KUBOTA teaches an electric circuit 220 (figs.2, 14, para. [0055]) wherein a first switching element 252 is a MOSFET. It would have been obvious to one of ordinary skilled in the art before the effective filing date of the claimed invention to have a first switching element is a MOSFET of KUBOTA in the system of Tse because a balance correction device equalizes voltages of cells and protect from one of overcurrent, overvoltage or overdischarge (see KUBOTA, para’s [0009] & [0041]). Claim 9 (new): The electrical circuit as recited in claim 8 wherein the third switching element a diode. (As to claim 9, Tse teaches (figs.1-13, para. [0003]) an electrical circuit 50a/70/80] (figs.5a, 5, 7-8, 11), wherein having the third switching element 55/73/83 (figs.5, 7, 8). Tse do not mention the third switching element is a diode. KUBOTA teaches an electric circuit 220 (figs.2, 14, para. [0055]) wherein a third switching element 262/264 (figs.2, 14) is a diode. It would have been obvious to one of ordinary skilled in the art before the effective filing date of the claimed invention to have a third switching element is a diode of KUBOTA in the system of Tse because a balance correction device equalizes voltages of cells and protect from one of overcurrent, overvoltage or overdischarge (see KUBOTA, para’s [0009] & [0041]). Claim 10 (new): The electrical circuit as recited in claim 7 wherein the third switching element a diode. (As to claim 10, Tse teaches (figs.1-13, para. [0003]) an electrical circuit 50a/70/80] (figs.5a, 5, 7-8, 11), wherein having the third switching element 55/73/83 (figs.5, 7, 8). Tse do not mention the third switching element is a diode. KUBOTA teaches an electric circuit 220 (figs.2, 14, para. [0055]) wherein a third switching element 262/264 (figs.2, 14) is a diode. It would have been obvious to one of ordinary skilled in the art before the effective filing date of the claimed invention to have a third switching element is a diode of KUBOTA in the system of Tse because a balance correction device equalizes voltages of cells and protect from one of overcurrent, overvoltage or overdischarge (see KUBOTA, para’s [0009] & [0041]). Citation of pertinent prior art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: a) Tse (US Pub.No.: US 2013/0038289 A1) teaches (figs.1-13, abstract) BATTERY-CELL CONVERTER SYSTEMS. b) Prior art of records (AIT EL BACHA et al., WO 2022069277 A1 correspond to US PUB.No.: US 2023/0378771 A1) teaches (figs1-2, abstract) dynamic system for balancing charging voltage for battery modules. c) Smolenaers (Pub.No.: US 2018/0254732 A1) teaches (figs.1-20, abstract) a controller for an inductive load having one or more windings. Response to Arguments Applicant’s arguments, see remarks, filed on 11/14/2024, with respect to replacement drawing have been fully considered and are not persuasive for the following reasons: Drawing Objection of figs.1-2 needs to be corrected as noted in this office action. Amendment to specification dated 11/14/2024 is acknowledged, however objection to specification needs to be corrected as noted in this office action. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANTONY M PAUL whose telephone number is (571)270-1608. The examiner can normally be reached M-F 8 am to 4 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, Mr. 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. /ANTONY M PAUL/ Primary Examiner of Art Unit 2837
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Prosecution Timeline

Nov 14, 2024
Application Filed
Aug 18, 2026
Non-Final Rejection (signed) — §102, §103, §112
Sep 25, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
90%
Grant Probability
99%
With Interview (+9.5%)
2y 3m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 658 resolved cases by this examiner. Grant probability derived from career allowance rate.

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