Prosecution Insights
Last updated: April 19, 2026
Application No. 18/712,416

ALLOYED HOT-DIP GALVANIZED STEEL SHEET

Non-Final OA §103§112
Filed
May 22, 2024
Examiner
CHRISTY, KATHERINE A
Art Unit
1784
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Nippon Steel Corporation
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
249 granted / 333 resolved
+9.8% vs TC avg
Strong +36% interview lift
Without
With
+35.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
31 currently pending
Career history
364
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
52.8%
+12.8% vs TC avg
§102
8.8%
-31.2% vs TC avg
§112
28.6%
-11.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 333 resolved cases

Office Action

§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 . Election/Restrictions Applicant’s election of species A (Mn: 0.01-1.30%) in the reply filed on December 22, 2025 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Claims 1-7 are pending, claim 1 is independent. Specification Applicant is reminded of the proper language and format for an abstract of the disclosure. The abstract should be in narrative form and generally limited to a single paragraph on a separate sheet within the range of 50 to 150 words in length. The abstract should describe the disclosure sufficiently to assist readers in deciding whether there is a need for consulting the full patent text for details. The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, “The disclosure concerns,” “The disclosure defined by this invention,” “The disclosure describes,” etc. In addition, the form and legal phraseology often used in patent claims, such as “means” and “said,” should be avoided. Specifically, “is disclosed” is language that can be implied. Claim Objections Claims 4, 6 and 7 are objected to because of the following informalities: each claim is objected to for an inappropriate period after "a balance" before the colon in the penultimate line of each claim. Appropriate correction is required. 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. Claims 1-7 are rejected under 35 U.S.C. 112(b), as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, regards as the invention. Regarding claim 1, claim 1 recites the limitations: “the following formulas” in line 2 page 2 “the extraction residue” lines 4-5 page 2 “the relationship” and “the following formula” line 5 page 2 “the following formulas” line 14 page 2. There is insufficient antecedent basis for these limitations in this claim. Regarding claims 2-7, these claims are rejected for their incorporation of the above due to their respective dependencies on claim 1. 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. 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(s) 1-7 are rejected under 35 U.S.C. 103 as being unpatentable over Fujita et al. (US 2004/0202889 A1), hereinafter Fujita. Regarding claims 1-3 and 5, Fujita teaches a hot-dip galvannealed steel sheet ([0024]; i.e. an alloyed galvanized steel sheet) having a plating layer on a surface of a base layer consisting of a steel sheet ([0076]), the steel sheet contains in microstructure in volume of 50-97% ferrite as a main phase and a second phase of either or both of martensite and retained austenite 3-50% (one of ordinary skill in the art reasonable understands steel microstructures of area and volume to be equivalent absent a teaching to the contrary and these values include 3% martensite and 0% retained austenite; [00087]), the average grain size of the main phase is ≤20 micron and the second phase is ≤ 10 micron ([0101]; these encompass the grain size of the entire microstructure and overlap the claimed range), a composition of the steel sheet in mass% as shown below in Table 1 ([0079]-[0086]; [0136]-[0144]; [038]). Table 1 Instant claim 1 Instant claim 2 Fujita [0079]-[0086]; [0136]-[0144];[0238] C 0.0005-0.0100 0.0001-0.3 Si 0.01-0.50 0.001 to <0.1 Mn 0.01-1.30 0.001-3 P ≤ 0.100 0.001-0.3 S ≤ 0.010 0.0001-0.1 N ≤ 0.0200 Ti 0.040-0.180 One or more of included with Nb, V, Hf, Zr and Ta at 0.001-1% total B 0.0005-0.0100 further contained 0.0001-0.1 Fe & impurities balance balance One or more of Al ≤ 1.000 0.001 to 1.000 0.001-4 Sn ≤ 1.00 0.001 to 1.000 ≤0.01 Mo ≤ 3.00 0.001 to 3.000 0.001-1 One or more of Sb ≤ 0.500 0.001 to 0.500 As ≤ 0.050 0.001 to 0.050 O ≤ 0.020 0.001 to 0.020 Cu ≤ 1.000 0.001 to 1.000 0.001-5 Cr ≤ 2.000 0.001 to 2.000 0.001-25 Ni ≤ 0.500 0.001 to 0.500 0.001-10 W ≤ 0.100 0.001 to 0.100 0.001-5 Co ≤ 3.000 0.001 to 3.000 0.001-5 Nb ≤ 0.100 0.001 to 0.100 One or more of included with Ti and Hf too, at 0.001-1% total Zr ≤ 0.050 0.001 to 0.050 Ta ≤ 0.100 0.001 to 0.100 V ≤1.00 0.001 to 1.000 Mg ≤ 0.050 0.001 to 0.050 optionally one or more of included with Y & Ce too, at 0.001-1% total Ca ≤ 0.0500 0.001 to 0.0500 REM ≤ 0.0500 0.001 to 0.0500 Regarding N, O, As and Sb, Fujita is silent to the presence of these elements, such that they are not considered to be present in an appreciable amount, also note examples. If these elements are not listed it is understood to one of ordinary skill in the art that it is reasonable that they are not present. Therefore the elements are considered to be present in an amount within, or at least overlapping, applicant’s claimed proportions (which include 0%). Regarding the contents of elements in equation 4, “mass in extraction residue” in ratio to the “mass of electrolyzed base steel sheet” are considered to be product by process language to the measurement process of the contents by amount the individual elements. Product-by-process language, provides no structural limitations beyond that of a ratio of an amount of each element, which is addressed above in the composition of the steel. The structure implied by the process steps should be considered when assessing the patentability of product-by process claims over the prior art (MPEP 2113 I). In this instance, no additional structure is implied beyond the amounts of each element, addressed above. The burden therefore shifts to applicant to come forward with a non obvious difference between the claimed product and the prior art product (MPEP 2113 II). Regarding equations 1, 3 and 4, the composition above in Table 1 in includes values that meet equations 1, 3 and 4. For example, in mass% Si: 0.099, Mn: 1.3, P: 0.09, C: 0.01, Ti: 0.05, N: 0, Nb: 0.5, B: 0.01, Si: 0.0001 result in equation 1 of 142.9, equation 3 of 0.0415 and equation 4 of 0.0008 ≤ 0.0064 ≤ 0.0274. In the case where the claimed ranges "overlap or lie inside ranges disclosed by the prior art" a prima facie case of obviousness exists, (MPEP 2144.05 I). The proportions disclosed by the prior art overlap applicants claimed proportions including equations and therefore establish a prima facie case of obviousness, where one of ordinary skill in the art before the effective filing date of the invention would have found it obvious to select from the proportions disclosed by the prior art, including those proportions, which satisfy the presently claimed requirements including equations (MPEP 2144.05 I). As of the writing of this Office Action, no objective evidence of criticality to the claimed ranges has been presented. Regarding claims 4, 6 and 7, Fujita teaches each limitation of claims 1-3 and 5, as discussed above. Fujita further teaches the plating layer containing in mass% as shown below in Table 2 ([0076]-[0079]; [0105]-[0119]). Table 2 Instant claims 4, 6, 7 Fujita [0076]-[0079]; [0105]-[0119] Fe 0.5-25.0 5-25 Al ≤ 1.0 0.001-4 Si ≤ 1.0 (optional) 0.001-0.1 Mg ≤ 1.0 (optional) 0.001-3 Mn ≤ 1.0 Ni ≤ 1.0 (optional) 0.001-0.5 Sb ≤ 1.0 Zn and impurities balance balance Regarding Mn, Fujita does not teach an Mn in this embodiment, but does teach Mn in multiple other embodiments; therefore, one of ordinary skill in the art reasonably understands it is not present in this embodiment. Regarding Sb, Fujita is silent to the presence of this, such that it is not considered to be present in an appreciable amount, also note examples. If these elements are not listed it is understood to one of ordinary skill in the art that it is reasonable that they are not present. Therefore, it is considered to be present in an amount within, or at least overlapping, applicant’s claimed proportions (which include 0%). In the case where the claimed ranges "overlap or lie inside ranges disclosed by the prior art" a prima facie case of obviousness exists, (MPEP 2144.05 I). The proportions disclosed by the prior art overlap applicants claimed proportions and therefore establish a prima facie case of obviousness, where one of ordinary skill in the art before the effective filing date of the invention would have found it obvious to select from the proportions disclosed by the prior art, including those proportions, which satisfy the presently claimed requirements (MPEP 2144.05 I). As of the writing of this Office Action, no objective evidence of criticality to the claimed ranges has been presented. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KATHERINE CHRISTY whose telephone number is (303)297-4363. The examiner can normally be reached Monday-Thursday, 7am-4pm MT. 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, Humera Sheikh can be reached at 571-272-0604. 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. /KATHERINE A CHRISTY/Primary Examiner, Art Unit 1784
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Prosecution Timeline

May 22, 2024
Application Filed
Jan 17, 2026
Non-Final Rejection — §103, §112
Apr 06, 2026
Applicant Interview (Telephonic)
Apr 09, 2026
Examiner Interview Summary

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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
75%
Grant Probability
99%
With Interview (+35.7%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 333 resolved cases by this examiner. Grant probability derived from career allow rate.

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