Prosecution Insights
Last updated: July 17, 2026
Application No. 18/277,738

VEGFA-BINDING MOLECULES

Final Rejection §112
Filed
Aug 17, 2023
Priority
Feb 19, 2021 — SG 10202101681W +1 more
Examiner
DUFFY, BRADLEY
Art Unit
1643
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Dotbio Pte. Ltd.
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
10m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
405 granted / 742 resolved
-5.4% vs TC avg
Strong +45% interview lift
Without
With
+45.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
33 currently pending
Career history
789
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
40.6%
+0.6% vs TC avg
§102
11.1%
-28.9% vs TC avg
§112
21.4%
-18.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 742 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 . DETAILED ACTION The amendment filed April 27, 2026, is acknowledged and has been entered. Claims 1, 2, 19 and 20 have been amended. Claims 4-7 have been canceled. Claim 27 has been newly added. Claims 1-3, 8-9, 11, 15, 19-20 and 27 are pending in the application and are under examination. Claim Rejections - 35 USC § 112 The following is a quotation 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 35 U.S.C. 112 (pre-AIA ), first paragraph: 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. Claims 19 and 20 are rejected under 35 U.S.C. 112, first paragraph, because the specification, while being enabling for using methods such as treating VEGFA mediated cancers comprising administering to a subject an effective amount of an antibody of claim 1 does not reasonably provide enablement for using the full scope of the claimed methods such as treating all VEGFA mediated diseases such treating ALS, which is a species of motor neuron disease. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to use the invention commensurate in scope with these claims. MPEP § 2164.01 states: The standard for determining whether the specification meets the enablement requirement was cast in the Supreme Court decision of Mineral Separation v. Hyde, 242 U.S. 261, 270 (1916) which postured the question: is the experimentation needed to practice the invention undue or unreasonable? That standard is still the one to be applied. In re Wands, 858 F.2d 731, 737, 8 USPQ2d 1400, 1404 (Fed. Cir. 1988). Accordingly, even though the statute does not use the term "undue experimentation," it has been interpreted to require that the claimed invention be enabled so that any person skilled in the art can make and use the invention without undue experimentation. In re Wands, 858 F.2d at 737, 8 USPQ2d at 1404 (Fed. Cir. 1988). There are many factors to be considered when determining whether there is sufficient evidence to support a determination that a disclosure does not satisfy the enablement requirement and whether any necessary experimentation is “undue”. These factors, which have been outlined in the Federal Circuit decision of In re Wands, 858 F.2d 731, 737, 8 USPQ2d 1400, 1404 (Fed. Cir. 1988), include, but are not limited to, the nature of the invention, the state of the prior art, the relative skill of those in the art, the amount of direction or guidance disclosed in the specification, the presence or absence of working examples, the predictability or unpredictability of the art, the breadth of the claims, and the quantity of experimentation which would be required in order to practice the invention as claimed. See also Ex parte Forman, 230 USPQ 546 (BPAI 1986). The amount of guidance, direction, and exemplification disclosed in the specification, as filed, would not be sufficient to enable the skilled artisan to make and/or use the claimed invention at the time the application was filed without undue and/or unreasonable experimentation. With respect to treating all VEGFA mediated diseases, it is noted that the art of Pronto-Laborinho et al (BioMed Res. Int., Article 947513, 1-24, 2014) discloses that overexpressing VEGFA in neurons partially rescued a mouse model of ALS, a species of motor neuron disease, delaying motor neuron loss, the onset of weakness and increasing survival (see page 10). Accordingly, it does not appear that antibodies that block VEGFA function would treat all VEGFA diseases or treat ALS, a motor neuron disease. Therefore, one of skill in the art would be subject to undue experimentation to determine how to treat any and all VEGFA mediated diseases, because VEGFA mediated diseases include diseases where it is unlikely the claimed agent would be effective. Applicant is reminded that reasonable correlation must exist between the scope of the claims and scope of enablement set forth. In deciding In re Fisher, 166 USPQ 18, 24 (CCPA 1970), the Court indicated the more unpredictable an area is, the more specific enablement is necessary in order to satisfy the statute. “Tossing out the mere germ of an idea does not constitute enabling disclosure. While every aspect of a generic claim certainly need not have been carried out by an inventor, or exemplified in the specification, reasonable detail must be provided in order to enable members of the public to understand and carry out the invention.” Genentech Inc. v. Novo Nordisk A/S, 42 USPQ2d 1001, 1005 (CA FC 1997). In conclusion, upon careful consideration of the factors used to determine whether undue experimentation is required, in accordance with the Federal Circuit decision of In re Wands, 858 F.2d at 737, 8 USPQ2d at 1404 (Fed. Cir. 1988), the amount of guidance, direction, and exemplification disclosed in the specification, as filed, is not deemed sufficient to have enable the skilled artisan to make and/or use the claimed invention at the time the application was filed without undue and/or unreasonable experimentation. In the response, Applicant submits that “preventing” has been deleted from claim 19 and “ALS” has been deleted from claim 20 to obviate the rejection, as “the Office has merely indicated that the specification does not reasonably provide enablement for using the full scope of the claimed methods such as preventing or treating all VEGFA mediated diseases such as preventing cancer or treating or preventing ALS”. In response, claim 19 continues to recite “treating all VEGFA mediated diseases” and claim 20 recites treating motor neuron diseases, of which ALS is a species, so claims 19 and 20 continue to encompass treating ALS. Conclusion Claims 1-3, 8-9, 11 and 15 are allowed. Claim 27 is objected to for depending upon rejected claim 19. THIS ACTION IS MADE FINAL. 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 extension fee 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 Brad Duffy whose telephone number is 571-272-9935. The examiner can normally be reached Mon-Fri. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Julie Wu, can be reached on 571-272-5205. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Respectfully, Brad Duffy 571-272-9935 /Brad Duffy/ Primary Examiner, Art Unit 1643 June 30, 2026
Read full office action

Prosecution Timeline

Aug 17, 2023
Application Filed
Jan 30, 2026
Non-Final Rejection mailed — §112
Apr 27, 2026
Response Filed
Jul 02, 2026
Final Rejection mailed — §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
55%
Grant Probability
99%
With Interview (+45.3%)
3y 9m (~10m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 742 resolved cases by this examiner. Grant probability derived from career allowance rate.

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