Prosecution Insights
Last updated: September 17, 2026
Application No. 18/340,913

COMPUTER IMPLEMENTED METHOD FOR ENGINEERING FLUORINASE ENZYMES FOR SYNTHESIS OF FLUOROPHENYL COMPOUNDS

Non-Final OA §101
Filed
Jun 26, 2023
Priority
Jun 24, 2022 — IN 202241029679
Examiner
ANDERSON-FEARS, KEENAN NEIL
Art Unit
Tech Center
Assignee
Kcat Enzymatic Private Limited
OA Round
1 (Non-Final)
12%
Grant Probability
At Risk
1-2
OA Rounds
1y 1m
Est. Remaining
53%
With Interview

Examiner Intelligence

Grants only 12% of cases
12%
Career Allowance Rate
3 granted / 25 resolved
-48.0% vs TC avg
Strong +41% interview lift
Without
With
+41.3%
Interview Lift
resolved cases with interview
Typical timeline
4y 4m
Avg Prosecution
44 currently pending
Career history
71
Total Applications
across all art units

Statute-Specific Performance

§101
31.5%
-8.5% vs TC avg
§103
39.6%
-0.4% vs TC avg
§102
9.3%
-30.7% vs TC avg
§112
12.0%
-28.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 25 resolved cases

Office Action

§101
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 Status Claims 1-5 are pending. Claims 1-5 are rejected. Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they do not include the following reference sign(s) mentioned in the description: Figure 11, Items A-C. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. 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 1-5 are rejected under 35 U.S.C. 101 because the claimed invention is directed to abstract ideas without significantly more. The claims recite a method for engineering a fluorinase enzyme. The judicial exception is not integrated into a practical application because while claims 1-5 attempt to integrated the exception into a practical application, said application is either generically recited computer elements that do not add a meaningful limitation to the abstract idea or it is insignificant extra solution activity and merely implementing the abstract idea on a computer. The claims do not include additional elements that are sufficient to amount to significantly more than the judicial exception because the computer elements only store and retrieve information in memory as well as perform basic calculations that are known to be well-understood, routine and conventional computer functions as recognized by the decisions listed in MPEP § 2106.05(d). Framework with which to Analyze Subject Matter Eligibility: Step 1: Are the claims directed to a category of stator subject matter (a process, machine, manufacture, or composition of matter)? [see MPEP § 2106.03] Claims are directed to statutory subject matter, specifically a method (Claims 1-5). Step 2A Prong One: Do the claims recite a judicially recognized exception, i.e., an abstract idea, a law of nature, or a natural phenomenon? [see MPEP § 2106.04(a)] The claims herein recite abstract ideas, specifically mental processes and mathematical concepts. With respect to the Step 2A Prong One evaluation, the instant claims are found herein to recite abstract ideas that fall into the grouping of mental processes and mathematical concepts. Claim 1: Identifying active pharmaceutical ingredients containing a fluorophenyl moiety, introducing a methionine-sulfonium group at a position of interest, conducting modeling studies of the converted substrates, and performing threedimensional modeling of an F- ion and the substrate to simulate a specific F- ion attack are processes of selecting, comparing/contrasting, and calculating information that can be done via pen and paper or within the human mind and are therefore abstract ideas, specifically mental processes. The optimal substrate being those specified is merely further limiting the data itself which is an abstract idea, specifically a mental process. Claim 2: Modeling the obtained protein sequences and achieving maximum 3D fitting, transforming the coordinates of the F- ion and substrate to the newly modeled fluorinase, and subjecting the newly modeled fluorinase to a screening protocol are processes of comparing/contrasting, and calculating that can be done via pen and paper or within the human mind and are therefore abstract ideas, specifically mental processes. Claim 3: Incorporating specific mutations to optimize the binding affinity is a process of calculating information that can be done via pen and paper or within the human mind and is therefore an abstract idea, specifically a mental process. Claim 4: The polypeptide comprising an amino acid sequence that is at least 75% identical to the specified sequence and incorporates the specified residues is merely further limiting the data itself which is an abstract idea, specifically a mental process. Claim 5: The polypeptide comprising an amino acid sequence given by the specified sequences including the specified features is merely further limiting the data itself which is an abstract idea, specifically a mental process. Step 2A Prong Two: If the claims recite a judicial exception under prong one, then is the judicial exception integrated into a practical application? [see MPEP § 2106.04(d) and MPEP § 2106.05(a)-(c) & (e)-(h)] Because the claims do recite judicial exceptions, direction under Step 2A Prong Two provides that the claims must be examined further to determine whether they integrate the abstract ideas into a practical application. The following claims recite the following additional elements in the form of non-abstract elements: Claim 1: A computer is a generic and nonspecific element of a computer that does not improve the functioning of any computer or technology described herein [See MPEP § 2106.04(d)(1) and MPEP § 2106.05(d)]. Claim 2: Obtaining a plurality of protein sequences is an insignificant extra solution activity, specifically mere data gathering (See Performing clinical tests on individuals to obtain input for an equation, In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989), PerkinElmer, Inc. v. Intema Ltd., 496 Fed. App'x 65, 73, 105 USPQ2d 1960, 1966 (Fed. Cir. 2012) (assessing or measuring data derived from an ultrasound scan, to be used in a diagnosis), Cutting hair after first determining the hair style, In re Brown, 645 Fed. App'x 1014, 1016-1017 (Fed. Cir. 2016) (non-precedential), and Printing or downloading generated menus, Ameranth, 842 F.3d at 1241-42, 120 USPQ2d at 1854-55) [See MPEP § 2106.05(g)]. Step 2B: If the claims do not integrate the judicial exception, do the claims provide an inventive concept? [see MPEP § 2106.05] Because the additional claim elements do not integrate the abstract idea into a practical application, the claims are further examined under Step 2B, which evaluates whether the additional elements, individually and in combination, amount to significantly more than the judicial exception itself by providing an inventive concept. The claims do not recite additional elements that are sufficient to amount to significantly more than the judicial exception because the claims recite additional elements that are generic, conventional or nonspecific. These additional elements include: The additional elements of a computer is a generic and nonspecific element of a computer that does not improve the functioning of any computer or technology described herein (Receiving or transmitting data over a network, e.g., using the Internet to gather data, Symantec, 838 F.3d at 1321, 120 USPQ2d at 1362 (utilizing an intermediary computer to forward information), Performing repetitive calculations, Flook, 437 U.S. at 594, 198 USPQ2d at 199 (recomputing or readjusting alarm limit values), and Storing and retrieving information in memory, Versata Dev. Group, Inc. v. SAP Am., Inc., 793 F.3d 1306, 1334, 115 USPQ2d 1681, 1701 (Fed. Cir. 2015)) [See MPEP § 2106.04(d)(1) and MPEP § 2106.05(d)]. Therefore, taken both individually and as a whole, the additional elements do not amount to significantly more than the judicial exception by providing an inventive concept. The additional elements of obtaining a plurality of protein sequences is an insignificant extra solution activity, specifically mere data gathering (See Performing clinical tests on individuals to obtain input for an equation, In re Grams, 888 F.2d 835, 839-40; 12 USPQ2d 1824, 1827-28 (Fed. Cir. 1989), PerkinElmer, Inc. v. Intema Ltd., 496 Fed. App'x 65, 73, 105 USPQ2d 1960, 1966 (Fed. Cir. 2012) (assessing or measuring data derived from an ultrasound scan, to be used in a diagnosis), Cutting hair after first determining the hair style, In re Brown, 645 Fed. App'x 1014, 1016-1017 (Fed. Cir. 2016) (non-precedential), and Printing or downloading generated menus, Ameranth, 842 F.3d at 1241-42, 120 USPQ2d at 1854-55) [See MPEP § 2106.05(g)]. Therefore, taken both individually and as a whole, the additional elements do not amount to significantly more than the judicial exception by providing an inventive concept. Therefore, claims 1-5, when the limitations are considered individually and as a whole, are rejected under 35 USC § 101 as being directed to non-statutory subject matter. Subject Matter Potentially Free from the Prior Art Claims 1-5 are potentially free from the prior art. Independent claim 1 is directed to a method of synthesizing a fuorinase enzyme for fluorophenyl compounds, which is not wholly unknown as evidenced by Pardo et al. which describes a method of isolating and characterizing putative fluorinases from in silico data mining. However, what sets apart the claims in this instance is the incorporation of the specific substrate [(3S)-3-amino-3-carboxypropyl][2,5-difluoro-4-(4-methoxy-2,4-dioxobutyl)phenyl]methylsulfonium, which is not found either within the previous patent literature or academic literature. As this is a mandatory inclusion within the claims, claim 1, and therefore all dependent claims, are potentially free from the prior art as the specified compound cannot be found within the art. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KEENAN NEIL ANDERSON-FEARS whose telephone number is (571)272-0108. The examiner can normally be reached M-Th, alternate F, 8-5. 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, Karlheinz Skowronek can be reached at 571-272-9047. 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. /K.N.A./Examiner, Art Unit 1687 /LARRY D RIGGS II/Supervisory Patent Examiner, Art Unit 1686
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Prosecution Timeline

Jun 26, 2023
Application Filed
Aug 20, 2026
Non-Final Rejection mailed — §101 (current)

Precedent Cases

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Prosecution Projections

1-2
Expected OA Rounds
12%
Grant Probability
53%
With Interview (+41.3%)
4y 4m (~1y 1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 25 resolved cases by this examiner. Grant probability derived from career allowance rate.

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