Prosecution Insights
Last updated: May 29, 2026
Application No. 18/197,129

ELECTROMAGNETIC VALVE FOR A FUEL CELL SYSTEM

Non-Final OA §102§103§112
Filed
May 15, 2023
Priority
May 16, 2022 — DE DE102022112199.2
Examiner
LEE, DANIEL H.
Art Unit
1746
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Eco Holding 1 GmbH
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
384 granted / 545 resolved
+5.5% vs TC avg
Strong +26% interview lift
Without
With
+25.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
21 currently pending
Career history
564
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
84.2%
+44.2% vs TC avg
§102
2.2%
-37.8% vs TC avg
§112
11.3%
-28.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 545 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 . Claim Objections Claim 3 is objected to because of the following informalities: In claim 3, the Examiner suggests adding “electrical” in “one additional electrical contact” for consistency and clarity. Claim Rejections - 35 USC § 112 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. Claim 2 is 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. In claim 2, “the additional electrical contact” lacks sufficient antecedent basis. Claim 1 recites “at least one additional electrical contact.” The Examiner suggests amending to “the at least one additional electrical contact” for consistency and clarity. 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 (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 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. (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 1-3 and 5-6 are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by Koenekamp (US 7,549,438 B2). Regarding claims 1 and 6, Koenekamp relates generally to a heated valve that employs a divided solenoid where only one of the coils in the solenoid is energized to provided valve heating during freeze conditions, where the valve has particular application for a valve in an anode outlet unit (i.e. drain or purge valve) of a fuel cell system (1:5-11). Koenekamp teaches the valve 40 includes a divided electromagnetic solenoid 70 (i.e. magnet coil), that is activated to lift the valve tappet 60 (i.e. actuates the electromagnetic valve) (4:4-7). Koenekamp teaches the coils may be energized to provide heat (4:26-36) and that there are multiple terminals (Fig. 3: terminals 84,86,88) (i.e. electrical contacts). Koenekamp teaches a typical fuel cell stack may have two hundred or more stacked fuel cells, receive a cathode input gas, and receive an anode input gas (1:37-46). Regarding claim 2, Koenekamp teaches terminal 88 is shown mid-way between the terminals 84 and 86, which reads on “centrally provided.” Regarding claim 3, Koenekamp teaches more than two coils can be provided in the solenoid (4:43-47). Regarding claim 5, Koenekamp teaches the valve 40 includes a cylindrical valve body 42, typically made of a metal, such as stainless steel, and a cylindrical valve housing 44, typically made of a suitable plastic (3:55-65). The valve housing of Koenekamp reads on the claimed valve body, and the valve body of Koenekamp reads on the metal insert parts. 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. 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. 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 4 is rejected under 35 U.S.C. 103 as being unpatentable over Koenekamp as applied to claims 1-3, and 5-6 above, and further in view of Siepierski et al. (“Siepierski, US 2003/0077499 A1). Regarding claim 4, Koenekamp teaches the valve 40 needs to be designed so that heat generated by the solenoid 70 (i.e. magnet coil) is able to reach the valve seat 58 (4:62-63); the valve tappet 60 can be made of a thermally conductive material (4:64-65). Koenekamp depicts in Fig. 2 the solenoid 70 in direct contact with valve tappet 60 and in direct contact with valve body 42 when activated. As discussed, Koenekamp teaches the solenoid (i.e. magnet coil) but does not teach the iron components of the magnet coil. However, it is well known in the art that iron is a common magnetic material (ferromagnetic). For example, Siepierski teaches permanent magnets can be made of neodymium-boron-iron, inter alia ([0025]). It would have been obvious to one of ordinary skill in the art at the effective filing date of the invention to use a magnet coil with the aforementioned iron components in order to predictably produce a coil with magnetism since such iron was a commonly known/suitable magnetic material, as evidenced by Siepierski ([0025]). The examiner notes that the MPEP establishes that simple substitution of one known element for another to obtain predictable results is generally not a matter of patentable distinction (MPEP 2143). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL H. LEE whose telephone number is (571)272-2548. The examiner can normally be reached M-F 8:30-5:00. 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, Michael Orlando can be reached at 5712705038. 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. /DANIEL H LEE/ Primary Examiner, Art Unit 1746
Read full office action

Prosecution Timeline

May 15, 2023
Application Filed
Dec 19, 2025
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12620599
LAYERED BODY, NEGATIVE ELECTRODE CURRENT COLLECTOR FOR LITHIUM ION SECONDARY BATTERY, AND NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY
2y 10m to grant Granted May 05, 2026
Patent 12614821
HIGH ENERGY DENSITY CYLINDRICAL BATTERY CELL DESIGN WITH STACKED ELECTRODES
2y 10m to grant Granted Apr 28, 2026
Patent 12261143
METHOD OF MANUFACTURING SUBSTRATE LAYERED BODY AND LAYERED BODY
3y 11m to grant Granted Mar 25, 2025
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2y 3m to grant Granted Mar 04, 2025
Patent 12215254
Honeycomb Core Splice Adhesive with Improved Fire Retardancy
4y 5m to grant Granted Feb 04, 2025
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
70%
Grant Probability
96%
With Interview (+25.6%)
2y 7m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 545 resolved cases by this examiner. Grant probability derived from career allowance rate.

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