Prosecution Insights
Last updated: July 17, 2026
Application No. 18/756,380

METHODS AND COMPOSITIONS FOR ANALYTE QUANTIFICATION

Non-Final OA §102§103§112
Filed
Jun 27, 2024
Priority
Nov 01, 2021 — provisional 63/274,513 +3 more
Examiner
MASKELL, MICHAEL P
Art Unit
Tech Center
Assignee
Matterworks Inc.
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
931 granted / 1081 resolved
+26.1% vs TC avg
Moderate +9% lift
Without
With
+9.2%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 2m
Avg Prosecution
14 currently pending
Career history
1088
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
65.8%
+25.8% vs TC avg
§102
25.5%
-14.5% vs TC avg
§112
2.5%
-37.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1081 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 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. Claims 32 and 38 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. Claim 32 depends from claim 1, which is canceled. Claim 38 recites “at least two of the five or more calibrators are configured to ionize both positively and negatively.” It is unclear if this means that the two calibrators produce both positive and negative ions when ionized, or are used in a positive ionization mode as well as a negative ionization mode, separately. Claim Rejections - 35 USC § 102 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. Claim(s) 31, 32, 34-36 and 39-50 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Jia (U.S. Patent Application Publication 2021/0116467A1). Regarding claim 31, Jia discloses a kit for metabolic analysis of a sample, comprising: Five or more calibrators configured to be used as universal standards with a mass spectrometry machine equipped with a molecular ion source to quantify a plurality of metabolites associated with one or more metabolic pathways (paragraphs 0076-0084; Fig. 11). Regarding claim 32, Jia discloses wherein the five or more calibrators comprise 5 to 20 calibrators (Fig. 11). Regarding claim 34, Jia discloses wherein the one or more metabolic pathways are associated with fatty acid metabolism (paragraph 0084). Regarding claim 35, Jia discloses wherein the five or more calibrators comprise at least two calibrators from different chemical classes (paragraph 0084). Regarding claim 36, Jia discloses wherein the different chemical classes are selected from the group consisting of nucleic acids, small molecules, proteins, amino acids, ethers, and sugars (paragraph 0084). Regarding claim 39, Jia discloses wherein the five or more calibrators are stable at room temperature in acidic and basic conditions or matrices (paragraph 0088). Regarding claim 40, Jia discloses wherein the five or more calibrators comprise a plurality of calibrators that are non-reactive with each other and/or with the one or more metabolites (paragraphs 0076-0099). Regarding claim 41, Jia discloses wherein the five or more calibrators have a pH ranging from 2 to 10 (paragraphs 0089-0099). Regarding claim 42, Jia discloses wherein the plurality of metabolites comprises at least two analytes having a same or similar property (paragraph 0088). Regarding claim 43, Jia discloses wherein the same or similar property comprises a molecular mass or weight, a molecular structure, a chemical property, a physical property, or an ionization efficiency (paragraph 0088). Regarding claim 44, Jia discloses wherein the number of the plurality of metabolites is greater than a number of the five or more calibrators (paragraph 0084). Regarding claim 45, Jia discloses a set of instructions for using the five or more calibrators to determine an absolute concentration of the one or more of the plurality of metabolites in the sample (paragraph 0232). Regarding claim 46, Jia discloses one or more quality control samples for verifying or validating an absolute concentration of one or more of the plurality of metabolites (paragraph 0231). Regarding claim 47, Jia discloses a column configured to interface with a liquid chromatography system that is coupled to the MS machine and tubing for preparing, collecting, or delivering the sample to a liquid chromatography system or the MS machine (paragraph 0223). Regarding claim 48, Jia discloses a standard mixture for generating a sample mixture comprising the five or more calibrators and the plurality of metabolites (paragraph 0023). Claims 49 and 50 are drawn to the method of providing the kit of claims 31 and 47, and the same rejections apply mutatis mutandis. 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. Claim(s) 33 is/are rejected under 35 U.S.C. 103 as being unpatentable over Jia. Regarding claim 33, Jia teaches providing a plurality of metabolites, but does not specify an upper limit of the number of metabolites that may be used. There is no apparent reason why one of ordinary skill in the art would not be able to apply Jia’s teachings to any number of metabolites, including at least 40 metabolites, in order to be able to analyze whatever number of metabolites are required. It would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to have the plurality of metabolites comprise at least 40 metabolites, in the normal course of performing analysis of different samples with different numbers of metabolites, including those with at least 40 metabolites. Allowable Subject Matter Claim 37 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: the prior art fails to teach wherein the five or more calibrators are non-endogenous, are non-isotopologues, and comprise a nonbiologic. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL P MASKELL whose telephone number is (571)270-3210. The examiner can normally be reached M-F 10A-6P. 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, Georgia Epps can be reached at 571-272-2328. 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. /MICHAEL MASKELL/ Primary Examiner, Art Unit 2878 26 June 2026
Read full office action

Prosecution Timeline

Jun 27, 2024
Application Filed
Jun 30, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12683139
SYSTEMS AND METHODS FOR CHARGE STATE ASSIGNMENT IN MASS SPECTROMETRY
3y 5m to grant Granted Jul 14, 2026
Patent 12674662
SYSTEM AND METHOD FOR ACQUIRING ALIGNMENT MEASUREMENTS OF STRUCTURES OF A BONDED SAMPLE
3y 9m to grant Granted Jul 07, 2026
Patent 12673218
Downstream Variable Thickness Energy Selection System for Charged Particle Therapy
3y 6m to grant Granted Jul 07, 2026
Patent 12671053
METHOD OF COMPENSATING FOR AN EFFECT OF ELECTRODE DISTORTION, ASSESSMENT SYSTEM
2y 6m to grant Granted Jun 30, 2026
Patent 12658419
METHODS AND APPARATUS FOR MSN MASS SPECTROMETRY
4y 0m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
86%
Grant Probability
95%
With Interview (+9.2%)
2y 2m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1081 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month