Prosecution Insights
Last updated: April 19, 2026
Application No. 18/019,228

COMPOSITIONS AND METHODS OF PREDICTING TIME TO ONSET OF LABOR

Final Rejection §101§103
Filed
Feb 01, 2023
Examiner
EMCH, GREGORY S
Art Unit
1678
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Board Of Trustees Of The Leland Stanford Junior University
OA Round
2 (Final)
50%
Grant Probability
Moderate
3-4
OA Rounds
3y 7m
To Grant
93%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allow Rate
305 granted / 615 resolved
-10.4% vs TC avg
Strong +44% interview lift
Without
With
+43.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
37 currently pending
Career history
652
Total Applications
across all art units

Statute-Specific Performance

§101
7.5%
-32.5% vs TC avg
§103
29.7%
-10.3% vs TC avg
§102
19.7%
-20.3% vs TC avg
§112
22.1%
-17.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 615 resolved cases

Office Action

§101 §103
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 . Applicants filed response on 2/5/2026 has been received. Claims 7 and 11-14 have been canceled. Claim 20 is added. Claims 1-6, 8-10 and 15-20 are pending and under examination. The objection on claim 7 is withdrawn because of amendment. The rejection on claim 7, 11-13 under 35 USC 112(b) is withdrawn because of amendment. The rejection on claims 1-19 under 35 USC 101 is partially withdrawn because of practical application and uncommon practice in the field (see below). The rejection on claim(s) 1-7, 11-12, 15-16 and 18-19 under 35 U.S.C. 102(a)(1) and (a)(2) as being anticipated by Liang is withdrawn because Liang’s biomarkers for onset of labor are not overlapped with the current invention. The rejection on claim(s) 1-7, 11-12, 15-16 and 19 under 35 U.S.C. 103(a) as being unpatentable by Dorr is withdrawn because the biomarkers of Dorr are not overlapped with the current invention. The rejection on claim(s) 1-7, 11-12, 15-19 under 35 U.S.C. 103(a) as being unpatentable by Gomez-Lopez is withdrawn because the biomarkers of Dorr are not overlapped with the current invention. In view of the amendment, a new office action is set forth below. Claim Objections Claim is objected to because of the following informalities: please provide full name of the abbreviation, PLXB2, DDR1, LPS, GM-CSF, pCREB. Appropriate correction is required. It is also noted that Angiopoietin-2 is recited twice. 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 1-6, 8, 15-16 and 18-20 are rejected under 35 U.S.C. 101 the claimed invention is directed to assessing time to onset of labor without significantly more. The claim(s) recite(s) law of nature. Thus the law of nature refers to the (1) measuring natural molecules from a subject, i.e. recited biomarker natural molecules in samples in at least two time points, and (2) correlating changes of the biomarker for onset of labor. Therefore, the natural relationship is the biomarker(s) correlating with a “condition” under judicial exception. (See Mayo Collaborative Servs. v. Prometheus Laboratories, Inc., 132 S.Ct. 1289 (2012). This judicial exception is not integrated into a practical application because no extra feature/or step is included. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception because IL-1R4, activin-a, siglic-6, ATIII, (Stie)-2, cortisol, PLXB2, DDR1, are all natural molecules in the body . MPEP 2106.04(d)(2) states “[e]xaminers should keep in mind that in order to qualify as a "treatment" or "prophylaxis" limitation for purposes of this consideration, the claim limitation in question must affirmatively recite an action that effects a particular treatment or prophylaxis for a disease or medical condition.” (also see Vanda Pharm. Inc. v. West-Ward Pharm. Int’l Ltd., 887 F.3d 1117, 126 USPQ2d 1266 (Fed. Cir. 2018). Therefore no patentable weight is given on mere “treatment”. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception because all the sample obtaining, processing and measuring specific natural molecules are common, routine, and well-known in the field, such as ELISA, immunoassay, flow cytometry (section 0067, 0128). These steps are recited at a high level of generality, and are necessary data gathering steps that feed into the determining step. One cannot do the determining step without getting the data. This weighs against it being significantly more. Applicants’ arguments are summarized below: “Applicant submits that the pending claims are patent-eligible, for at least the reason that under the Step 2B analysis of the 2019 Revised Patent Subject Matter Eligibility Guidance (2019 PEG), the instant claims as a whole provide an inventive concept that amounts to significantly more than the alleged judicial exception. Even assuming arguendo that claim 1 includes a judicial exception in the form of an abstract idea as alleged by the Office (which Applicant does not concede), it should be noted that the first steps of the claim, at least, are physical laboratory elements that do not include a judicial exception that falls into any of the categories listed in MPEP 2106. As such. these claim limitations should be considered "elements in addition" to be considered in combination under Step 2B of the patent eligibility analysis. The quantitation of specific sets of markers, as provided in the instant claims, was not well-understood, routine, or conventional as of the effective filing date of the Application. In particular, it was not well-understood, routine, or conventional for one of skill in the art to quantitate specific panels of markers, as recited in each of the independent claims. Applicant respectfully points the Office to M.P.E.P. § 2106.05, which states that "[c]onsideration of the elements in combination is particularly important, because even if an additional element does not amount to significantly more on its own, it can still amount to significantly more when considered in combination with the other elements of the claim. See, e.g., Rapid Litig. Mgmt. v. CellzDirect, 827 F.3d 1042, 1051, 119 USPQ2d 1370, 1375 (Fed. Cir. 2016) (process reciting combination of individually well-known freezing and thawing steps was "far from routine and conventional" and thus eligible); BASCOM Global Internet Servs. v. AT&T Mobility LLC, 827 F.3d 1341, 1350, 119 USPQ2d 1236, 1242 (Fed. Cir. 2016) (inventive concept may be found in the non-conventional and non-generic arrangement of components that are individually well-known and conventional)" (emphases added). Further, M.P.E.P. § 2106.05 also states that "the search for an inventive concept is different from an obviousness analysis under 35 U.S.C. 103. See, e.g., BASCOM Global Internet v. AT&T Mobility LLC, 827 F.3d 1341, 1350, 119 USPQ2d 1236, 1242 (Fed. Cir. 2016) ('the inventive concept inquiry requires more than recognizing that each claim element, by itself, was known in the art. . [A]n inventive concept can be found in the non-conventional and non-generic arrangement of known, conventional pieces.')" (emphases added). Applicant submits that the claimed invention recites additional elements that amount to significantly more than the alleged judicial exception and thus provide an inventive concept. In view of the amendments and remarks, withdrawal of the rejection is requested.” Applicant’s arguments have been considered but are not persuasive. Claim 1 directs to measure at least 5 biomarkers from the Markush group. As has been discussed above, at least the IL-1R4, activin-a, siglic-6, ATIII, (Stie)-2, angiopoietin-2, VEGF121, cortisol, PLXB2, DDR1 are all natural molecules exist in the body. Therefore law of nature remains effective. The same rationale also applies to claim 8. Note, claim 9 and claim 10 are significantly more than law of nature because of dendritic cell pSTAT6 response to interferon alpha, CD69-CD56'OCD16+NK cell pSTAT1 response to IFNalpha, PERK and PCREB signals in classical monocytes (cMCs) in response to LPS and GM-CSF, and PCREB response in non-classical monocytes (ncMCs) in response to GM- CSF. These are not naturally exist in the body, i.e. need of external stimulus such as interferon, and GM-CSF. Claims 9-10 and 17 are allowed. The closest prior art is the applicants’ earlier meeting abstract (Stelzer Reproductive Sciences 2020 March Vol. 27, page 89A #O-081) where applicants provide three biomarkers overlapped with the current invention, i.e. IL-1R4, angiopoietin and ATIII for assessing onset of labor. Conclusion Claims 1-6, 8, 15-16 and 18-20 are rejected. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHANGHWA J CHEU whose telephone number is (571)272-0814. The examiner can normally be reached 8 am to 8 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, Gregory Emch can be reached at 5712728149. 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. CHANGHWA J. CHEU Primary Examiner Art Unit 1678 /CHANGHWA J CHEU/Primary Examiner, Art Unit 1678
Read full office action

Prosecution Timeline

Feb 01, 2023
Application Filed
Sep 04, 2025
Non-Final Rejection — §101, §103
Feb 05, 2026
Response Filed
Mar 17, 2026
Final Rejection — §101, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600799
ANTI-IgG NANOBODIES
2y 5m to grant Granted Apr 14, 2026
Patent 12570710
TARGETING LILRB4 WITH CAR-T OR CAR-NK CELLS IN THE TREATMENT OF CANCER
2y 5m to grant Granted Mar 10, 2026
Patent 12332252
GFAP ACCUMULATING IN STROKE
2y 5m to grant Granted Jun 17, 2025
Patent 12138261
INHIBITORS OF BCL-2
2y 5m to grant Granted Nov 12, 2024
Patent 12071479
Antibodies Against ILT2 and Use Thereof
2y 5m to grant Granted Aug 27, 2024
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
50%
Grant Probability
93%
With Interview (+43.6%)
3y 7m
Median Time to Grant
Moderate
PTA Risk
Based on 615 resolved cases by this examiner. Grant probability derived from career allow 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