Prosecution Insights
Last updated: October 02, 2026
Application No. 18/523,311

ESTIMATION OF PHYSICAL PARAMETERS FROM MEASUREMENTS USING SYMBOLIC REGRESSION

Non-Final OA §102§112
Filed
Nov 29, 2023
Priority
May 03, 2023 — provisional 63/463,853
Examiner
NGUYEN, LAM S
Art Unit
2853
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Halliburton Energy Services Inc.
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
79%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
1124 granted / 1426 resolved
+10.8% vs TC avg
Minimal +0% lift
Without
With
+0.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
68 currently pending
Career history
1476
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
46.7%
+6.7% vs TC avg
§102
33.4%
-6.6% vs TC avg
§112
8.0%
-32.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1426 resolved cases

Office Action

§102 §112
CTNF 18/523,311 CTNF 79126 DETAILED ACTION Notice of Pre-AIA or AIA Status 07-03-aia AIA 15-10-aia The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA. In response to the restriction requirement, the Applicant elected claims 1, 4-5, 9, 12-13, 17, and 19 for further examination. As a result, claims 2-3, 6-8, 10-11, 14-16, 18, and 20 are withdrawn from further prosecution. Claim Objections 07-29-01 AIA Claim s 1 objected to because of the following informalities: The claim recites “the collected logging data” (lines 6-7) with insufficient antecedent basis . Appropriate correction is required. Claim Rejections - 35 USC § 112 07-30-02 AIA 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. 07-34-14 AIA Claim s 1, 9, and 17 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA), second paragraph, as being incomplete for omitting essential structural cooperative relationships of elements, such omission amounting to a gap between the necessary structural connections. See MPEP § 2172.01. The omitted structural cooperative relationships are: The step of “identifying that the first set of values do not correspond to the collected logging data” does not link to the further steps in the claim body . Claim Rejections - 35 USC § 102 07-07-aia AIA 07-07 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 – 07-08-aia AIA (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. 07-15-aia AIA Claim(s) 1, 5-6, 9, 12-13, 17, 19 is/are rejected under 35 U.S.C. 102 (a)(1) as being anticipated by Chen et al. (US 2022/0381130) . Regarding to claims 1, 9, 17: Chen et al. discloses a method for improving a computer model, the method comprising: identifying a formula to associate collected data with a set of known parameters of a sample ( FIGs. 1 and 4: The symbolic regression model or the initial candidate model associates the identified facies from the measurements (210) and the Archie parameters from the core samples (202) ); calculating a first set of values according to the formula based on the known parameters of the sample; identifying that the first set of values do not correspond to the collected logging data ( FIG. 5: During the training the initial candidate model 508, the termination condition (510) is not reached when the output data does not correspond to labeled data ); identifying an updated formula to calculate a second set of values; and identifying that the second set of values correspond to the collected data, wherein the updated formula is classified as a trained formula based on the identification that the second set of values correspond to the collected data, and wherein the trained formula is associated with the computer model ( FIG. 4, step 404: The symbolic regression model is trained or updated to output a formation model. In other words, the formation model is a trained model representing the received data associated with the reservoir formation ). Regarding to claims 4, 12 : wherein the sample is located in at least one of a wellbore or a cutting taken from the wellbore ( FIG. 1: Wellbore 122 ) Regarding to claims 5, 13, 19 : further comprising accessing data sensed in a wellbore; performing evaluations according to the updated formula based on the sensed wellbore data; and identifying parameters of a subterranean formation of the wellbore based on the evaluations being performed according to the updated formula ( FIG. 4: The determined formation model is used to estimate property of reservoir formation ). CONTACT INFORMATION Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAM S NGUYEN whose telephone number is (571)272-2151. 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, DOUGLAS RODRIGUEZ, can be reached on 571-431-0716. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /LAM S NGUYEN/ Primary Examiner, Art Unit 2853 Application/Control Number: 18/523,311 Page 2 Art Unit: 2853 Application/Control Number: 18/523,311 Page 3 Art Unit: 2853 Application/Control Number: 18/523,311 Page 4 Art Unit: 2853 Application/Control Number: 18/523,311 Page 5 Art Unit: 2853
Read full office action

Prosecution Timeline

Nov 29, 2023
Application Filed
May 13, 2026
Non-Final Rejection mailed — §102, §112
Sep 28, 2026
Applicant Interview (Telephonic)
Sep 28, 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
79%
Grant Probability
79%
With Interview (+0.2%)
2y 8m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1426 resolved cases by this examiner. Grant probability derived from career allowance rate.

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