Prosecution Insights
Last updated: April 19, 2026
Application No. 18/122,940

CARBON DIOXIDE CAPTURE USING COVALENT ORGANIC FRAMEWORKS

Non-Final OA §102§112
Filed
Mar 17, 2023
Examiner
PHAN, ANNETTE HOANG-ANH
Art Unit
1736
Tech Center
1700 — Chemical & Materials Engineering
Assignee
UNIVERSITY OF WYOMING
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
21 granted / 28 resolved
+10.0% vs TC avg
Strong +29% interview lift
Without
With
+29.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
23 currently pending
Career history
51
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
45.8%
+5.8% vs TC avg
§102
29.9%
-10.1% vs TC avg
§112
20.1%
-19.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 28 resolved cases

Office Action

§102 §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 . Election/Restrictions Claims 12-20 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected group, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on November 21, 2025. Applicant's election with traverse of claims 1-11 in the reply filed on November 21, 2025 is acknowledged. The traversal is on the ground(s) that there is no serious search burden place on the examiner. This is not found persuasive because the search burden has been established in the Requirement for Restriction/Election document sent October 21, 2025. The requirement is still deemed proper and is therefore made FINAL. 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. Claims 3-5 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. Regarding claims 3-5, the instant claims use a measurement within parenthesis such as “(about 10,000 ppm)” and “(about 50 ppm)”. The addition of these parameters makes it unclear if these limitations are required. 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) 1-5 and 8 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Guo (CN112044402A). Regarding claims 1 and 2, Guo discloses an invention where a covalent organic framework (COF) is made up of various quinoline carboxylic acid groups (Guo [0014]). The reference teaches forming a composition by adding COF into a water solution containing Rhodamine B (Guo[0078]). This leads to the production of a composition comprised of an amine, a covalent organic framework, and water. Therefore, the disclosure within the prior art fulfils the limitations set in the instant claim requiring there to be a composition comprised of a COF combined with water and an amine. Regarding claims 3-5, Guo discloses that 0.1g of COF are added into 1000 g water spiked with Rhodamine B (Guo[0078]). As the 0.1g of COF are added into a 1000g water sample the resulting composition has a COF content of 0.01 wt.%. Therefore, this disclosure fulfils the limitations set in the instant claim requiring the COF to have a wt.% between 0 wt.% to 1 wt.%, 0 wt.% to 0.05 wt.%, and 0.005 wt.% and 0.015 wt. Regarding claims 8, Guo discloses an amine in the form of Rhodamine B, a tertiary amine (Guo[0078]). Therefore, the disclosure in the prior art meets the limitations set in the instant claim requiring an organic amine to comprise of a tertiary amine compound. Allowable Subject Matter Claim 6-7 and 9-11 are 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. Reasons for Indicating Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: While Guo discloses an invention where a covalent organic framework (COF) is made up of various quinoline carboxylic acid groups (Guo [0014]) and teaches that COF would be mixed with an amine and water (Guo[0078]), Guo does not teach or suggest composition with a similar structure nor formula required by claims 6 and 7. Regarding claim 9, Guo discloses a tertiary amine, however the prior art does not teach or suggest a tertiary amine comprising of monoethanolamine, diethanolamine, triethanolamine, diisopropanolamine, monomethyl- ethanolamine, methyl diethanolamine, diethyl-monoethanolamide. Regarding claims 10 , Guo does not teach or suggest that the organic amine is a polyethylene amine. Regarding claim 11, Guo does not teach or suggest adding the organic amine in an amount of 10-30 wt.% based on the total wt. of the composition as required by the claim . It is for these reasons claims 6-7 and 9-11 are considered novel and nonobvious. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANNETTE H PHAN whose telephone number is (703)756-4520. The examiner can normally be reached M-F 8:30-6:30 EST. 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, Anthony Zimmer can be reached at 5712703591. 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. /ANNETTE PHAN/Examiner, Art Unit 1736 /ANTHONY J ZIMMER/Supervisory Patent Examiner, Art Unit 1736
Read full office action

Prosecution Timeline

Mar 17, 2023
Application Filed
Nov 16, 2023
Response after Non-Final Action
Feb 29, 2024
Response after Non-Final Action
Mar 18, 2026
Non-Final Rejection — §102, §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

1-2
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+29.2%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 28 resolved cases by this examiner. Grant probability derived from career allow rate.

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