Prosecution Insights
Last updated: April 19, 2026
Application No. 17/410,658

THE FGF19-CHOLESTYRAMINE (F-CME) TEST AS A TWO-STAGE METHOD FOR ROUTINE CANCER SCREENING

Non-Final OA §112
Filed
Aug 24, 2021
Examiner
PAK, MICHAEL D
Art Unit
1674
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
OA Round
3 (Non-Final)
58%
Grant Probability
Moderate
3-4
OA Rounds
3y 10m
To Grant
89%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
405 granted / 694 resolved
-1.6% vs TC avg
Strong +31% interview lift
Without
With
+30.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
24 currently pending
Career history
718
Total Applications
across all art units

Statute-Specific Performance

§101
7.5%
-32.5% vs TC avg
§103
21.6%
-18.4% vs TC avg
§102
24.4%
-15.6% vs TC avg
§112
33.7%
-6.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 694 resolved cases

Office Action

§112
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on January 8, 2026 has been entered. Claims filed January 8, 2026 is entered. Claims 1-4, 6, 8-10, 12-15 are pending. Claims 5, 7, 11 are canceled. Claims 1-4, 6, 8-10, 12-15 are examined. Claim Objections Claim 1 objected to because of the following informalities: Claim 1 has double period at the end of the claim. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. 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 1-4, 6, 8-10, 12-15 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 2 recite “cholestyramine treatment comprises of 1 day” which is confusing and ambiguous because it is not clear how the cholestyramine treatment “comprises” the time event. The claims uses relative term which is ambiguous. Claim 3 recites the limitation "cholestyramine dose" in line 1. There is insufficient antecedent basis for this limitation in the claim. Claim 4 recites the limitation "cholestyramine is administered" in line 1. There is insufficient antecedent basis for this limitation in the claim. Claim 4 recites “step (iii)” which is confusing because claim 3 does not recite step (iii). Claims 6 recite or encompass the term “used monitor cancer progression” which is ambiguous and confusing because it is not clear how the method is used monitoring and thus the metes and bounds are not clear. Claims 8 recite or encompass the term “used for post-curative cancer monitoring which is ambiguous and confusing because it is not clear how the method is used monitoring and thus the metes and bounds are not clear. Claim 9 recites the limitation "biological sample" in line 1. There is insufficient antecedent basis for this limitation in the claim. Claim 12 recites the limitation "method of screening" in line 1. There is insufficient antecedent basis for this limitation in the claim. Claim 12 recites the limitation "detecting the FGF19 levels" in line 1-2. There is insufficient antecedent basis for this limitation in the claim. Claims 1-4, 6, 8-10, 12-15 encompass the above claim terms. Claims 1-4, 6, 8-10, 12-15 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the enablement requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to enable one skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention. The first paragraph of § 112 requires that the patent specification enable "those skilled in the art how to make and use the full scope of the claimed invention without `undue experimentation."' Genentech, Inc. v. Novo Nordisk AIS, 108 F.3d 1361, 1365, 42 USPQ2d 1001, 1004 (Fed. Cir. 1997) (quoting In re Wright, 999 F.2d 1557, 1561, 27 USPQ2d 1510, 1513 (Fed. Cir. 1993)); see also In re Fisher, 427 F.2d 833, 839, 166 USPQ 18, 24 (CCPA 1970). ("[T]he scope of the claims must bear a reasonable correlation to the scope of enablement provided by the specification to persons of ordinary skill in the art."). Whether making and using the invention would have required undue experimentation, and thus whether the disclosure is enabling is a legal conclusion based upon several underlying factual inquiries. See In re Wands, 858 F.2d 731, 735, 736-37, 8 USPQ2d 1400, 1402, 1404 (Fed. Cir. 1988). As set forth in Wands, the factors to be considered in determining whether a claimed invention is enabled throughout its scope without undue experimentation include the quantity of experimentation necessary, the amount of direction or guidance presented, the presence or absence of working examples, the nature of the invention, the state of the prior art, the relative skill of those in the art, the predictability or unpredictability of the art, and the breadth of the claims. Likewise, in Amgen Inc. v. Chugai Pharm. Co., 927 F.2d 1200, 18 USPQ2d 1016 (Fed. Cir. 1991), the court affirmed the holding of invalidity of claims to analogs of the EPO gene under § 112 for lack of enablement where applicants had claimed every possible analog of the EPO gene but had disclosed only how to make EPO and a very few analogs. "[D]espite extensive statements in the specification concerning all analogs of the EPO gene that can be made, there is little enabling disclosure of the particular analogs and how to make them .... There may be many other genetic sequences that code for EPO-type products. Amgen has told how to make and use only a few of them and is therefore not entitled to claim all of them." Id., 927 F.2d at 1213-14, 18 USPQ2d at 1027. Claim 1 encompass a method comprising generic cancer therapy to a subject wherein the subject has a diagnostic amount of FGF19. However, one skilled in the art is not aware of treating generic cancer therapy to subject wherein the subject is only diagnosed with FGF19 amount. The amount of direction provided in the specification is limited to diagnostic method of detection of FGF19 in colorectal cancer cells. No example is provided generic cancer therapy nor hepatocellular carcinoma. The state of the art is such that one skilled in the art teach treatment of tumours of disease by administering Cholestyramine (Gillberg et al.(US 10,493,096). One skilled in the art is not able to predict the types of cancer based on the diagnostic of FGF19 amount alone. One skilled in the art is not able to treat subjects with generic cancer therapy based upon the amount of FGF19 alone. The colorectal cancer diagnostic of FGF19 does not provide teaching sufficient to enable the treatment of generic cancer therapy. In view of the extent and the unpredictability of the experimentation required to practice the invention as claimed, one skilled in the art could not make the invention without undue experimentation. Therefore, based on the above Wands analysis, a preponderance of the evidence supports a conclusion that one skilled in the art would not have been enabled to make and use the invention of claims without undue experimentation. No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL D PAK whose telephone number is (571)272-0879. The examiner can normally be reached on flexible. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Vanessa Ford can be reached on 571-272-0857. 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. /MICHAEL D PAK/Primary Examiner, Art Unit 1674
Read full office action

Prosecution Timeline

Aug 24, 2021
Application Filed
Nov 30, 2024
Non-Final Rejection — §112
May 05, 2025
Response Filed
Aug 06, 2025
Final Rejection — §112
Dec 08, 2025
Response after Non-Final Action
Jan 08, 2026
Request for Continued Examination
Jan 13, 2026
Response after Non-Final Action
Feb 07, 2026
Non-Final Rejection — §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

3-4
Expected OA Rounds
58%
Grant Probability
89%
With Interview (+30.7%)
3y 10m
Median Time to Grant
High
PTA Risk
Based on 694 resolved cases by this examiner. Grant probability derived from career allow rate.

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