Prosecution Insights
Last updated: October 02, 2026
Application No. 18/580,633

FERRIC PHOSPHATE, PREPARATION METHOD THEREOF, AND USE THEREOF

Non-Final OA §103§112
Filed
Jan 19, 2024
Priority
Jul 19, 2021 — CN 202110815191.7 +1 more
Examiner
HENDRICKSON, STUART L
Art Unit
Tech Center
Assignee
Hunan Brunp EV Recycling Co., Ltd.
OA Round
1 (Non-Final)
72%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
725 granted / 1003 resolved
+12.3% vs TC avg
Moderate +8% lift
Without
With
+8.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
33 currently pending
Career history
1024
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
43.5%
+3.5% vs TC avg
§102
15.0%
-25.0% vs TC avg
§112
27.2%
-12.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1003 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 . The election is noted. Claim 9 is withdrawn. 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 Rejections - 35 USC § 112 Claims 1-8 and 11 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. In claim 1, ‘metal liquid’ is unclear is a solution is meant or whether a molten metal (or mercury) is required. Claim 11 is unclear as to which stirring step is meant (making the seed or the product?). The ‘preferably clauses’ of claims 2, 3, 5-8 and 11 are improper and unclear if they are required. 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. Claim Rejections - 35 USC § 103 Claims 1-7 and 11 are rejected under 35 U.S.C. 103 as being unpatentable over Chu et al. 4696807 taken with Ruszala et al. 4374109. Chu teaches, especially in ex. 1, adding phosphate, ferric ion and a surfactant and adjusting pH with a base. The solution is aged with stirring, filtered, dried and calcined. This does not teach a seed, however Ruszala teaches, especially in col. 2, synthesizing the same compound using a seed. Using it in the process of Chu is obvious to make the desired material. For claims 2, 3, 7 and 11, they are embedded product-by-process limitations within a process claim and thus the process does not actually require the steps recited. Claim 4 is obvious given the overall stoichiometric ratio of the product-even though not exemplified. Note also Chu col. 10. For claim 5, the stirring speed is obvious to attain effective mixture of the ingredients, especially given their different solubilities. Ruszala teaches the temperatures. For claim 6, the recited materials are not actually required and the explicit pH (if different) is obvious to optimize the solubilities of the reagents. Allowable Subject Matter Claim 8 is allowable since the surfactants are not taught or obvious, noting that the ‘preferably’ limitation does not limit the claim (and which is taught by Ruszala). Any inquiry concerning this communication or earlier communications from the examiner should be directed to STUART L HENDRICKSON whose telephone number is (571)272-1351. The examiner can normally be reached on Monday-Friday from 9 to 5. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Anthony Zimmer, can be reached on 571-270-3591. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. /STUART L HENDRICKSON/Primary Examiner, Art Unit 1736
Read full office action

Prosecution Timeline

Jan 19, 2024
Application Filed
Sep 01, 2026
Non-Final Rejection mailed — §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

1-2
Expected OA Rounds
72%
Grant Probability
80%
With Interview (+8.0%)
3y 1m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1003 resolved cases by this examiner. Grant probability derived from career allowance rate.

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