Prosecution Insights
Last updated: October 02, 2026
Application No. 18/643,765

METHOD FOR CORRECTING AGE OF COLUMBITE-TANTALITE BY USING DOUBLE-REFERENCE-MATERIALS

Non-Final OA §101
Filed
Apr 23, 2024
Priority
May 05, 2023 — CN 202310493629.3
Examiner
GOURLIE, LAURA ELOISE
Art Unit
2881
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Chinese Academy of Sciences
OA Round
2 (Non-Final)
64%
Grant Probability
Moderate
2-3
OA Rounds
9m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
38 granted / 59 resolved
-3.6% vs TC avg
Strong +39% interview lift
Without
With
+38.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
30 currently pending
Career history
94
Total Applications
across all art units

Statute-Specific Performance

§101
3.6%
-36.4% vs TC avg
§103
49.6%
+9.6% vs TC avg
§102
18.7%
-21.3% vs TC avg
§112
26.5%
-13.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 59 resolved cases

Office Action

§101
DETAILED ACTION Response to Arguments Second Non-Final Office Action Since new grounds of rejections not necessitated by applicant’s amendment of the claims nor based on information submitted in an information disclosure statement filed during the period set forth in 37 CFR 1.97(c) with the fee set forth in 37 CFR 1.17(p), this second action is NON-FINAL. See MPEP 706.07(a). See the 101 rejection below which was not a rejection made in the prior office action. Claim Objections In view of the amendments to claims 5 and 8, the objection of claims 5 and 8 has been withdrawn. Claim rejections under 35 §112(b) With respect to the amendments to the claims, the rejections of claims 1-8 have been withdrawn. 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 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. Claims 1-8 are rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. The claim(s) recite(s) a mathematical concept, particularly a calculation for correcting an age of columbite-tantalite (Prong 2A: YES, see MPEP 2106.04 II). The mathematical calculation includes determining a positive correlation between a lead-uranium ratio and a uranium ion ratio of a reference material 1 (claim 1) calculating a lead-uranium isotope ratio and a lead-uranium age of a reference material 2 based on the same positive correlation (claim 1) calculating a lead uranium ratio and a lead uranium age of a sample to be tested based on the determined positive correlation and a lead-uranium ion ratio and the uranium ion ratio of the sample (claim 1) performing deviation correction, determining the positive correlation after correction, calculating the lead-uranium ratio and the lead-uranium age of the sample (claim 2) according to the equations presented in the claims, particularly in claim 1, and the specification (see the equations in Table 1). The claims do not apply this calculation to a practical application and the claims do not amount to anything beyond this application. Genetic Techs. Ltd. v. Merial LLC, 818 F.3d 1369, 1376, 118 USPQ2d 1541, 1546 (Fed. Cir. 2016) teaches that the inventive concept “cannot be furnished by the unpatentable law of nature (or natural phenomenon or abstract idea) itself” (see MPEP 2106.05 I). This judicial exception is not integrated into a practical application (Prong 2B: NO, see MPEP 2106.05) because the additional elements are directed to mere data gathering, which is insignificant extra-solution activity (see MPEP 2106.05(g)). Measuring the reference material 1 to obtain not less than 3 sets of the lead-uranium ion ratio and the uranium ion ratio in claim 1 is mere data gathering because the measuring is used to obtain input for an equation (In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989)) Measuring the reference material 2 to obtain a lead-uranium ion ratio and a uranium ion ratio in claim 1 is mere data gathering because the measuring is used to obtain input for an equation (In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989)) Measuring the lead-uranium ion ratio and the uranium ion ratio of the sample is mere data gathering because the measuring is used to obtain input for an equation (In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989)) The limitations of claim 4-6, which detail the preparation prior to measuring the sample are mere data gathering because the measuring, and preparations therefor, are used to obtain input for an equation (In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989)). The limitations of claims 7-8, which detail the measuring, is mere data gathering because the measuring is used to obtain input for an equation (In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989)), as evidenced by claims 1-3, which demonstrate how the information gathered from the measuring is utilized in the equations in order to accomplish the “determining…” and “calculating…” steps. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception because measuring steps used to acquire input for equations are merely tangential additions to the claim and do not amount to an inventive concept. See MPEP 2106.05(g). Conclusion Similar art made of record and not relied upon is considered related to applicant's disclosure. Ling, et. al. (CN 112927762 A; cited in the IDS filed 04/23/2024). Ling, et. al. is directed to a method for high precision age of micron-sized titanite. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAURA E TANDY whose telephone number is (703)756-1720. The examiner can normally be reached Monday - Friday 8:00 am - 5:00 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, Robert Kim can be reached at 5712722293. 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. LAURA E TANDY Examiner Art Unit 2881 /DAVID E SMITH/Examiner, Art Unit 2881
Read full office action

Prosecution Timeline

Apr 23, 2024
Application Filed
Apr 14, 2026
Non-Final Rejection mailed — §101
Jul 06, 2026
Response Filed
Sep 24, 2026
Non-Final Rejection mailed — §101 (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

2-3
Expected OA Rounds
64%
Grant Probability
99%
With Interview (+38.8%)
3y 2m (~9m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 59 resolved cases by this examiner. Grant probability derived from career allowance rate.

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