Prosecution Insights
Last updated: October 22, 2026
Application No. 18/786,089

CONVERSION OF CHLOROFLUOROROPANES AND CHLOROFLUROPROPENES TO MORE DESIRABLE FLUOROPROPANES AND FLUOROROPENES

Non-Final OA §102§112
Filed
Jul 26, 2024
Priority
Apr 16, 2014 — provisional 61/980,157 +7 more
Examiner
BAHTA, MEDHANIT W
Art Unit
1692
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The Chemours Company FC LLC
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allowance Rate
642 granted / 797 resolved
+20.6% vs TC avg
Strong +28% interview lift
Without
With
+27.8%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
44 currently pending
Career history
845
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
40.0%
+0.0% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
29.3%
-10.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 797 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 Applicant’s election without traverse of Group I, claims 1-5, 11 and 13-15 in the reply filed on 07/10/2026 is acknowledged. Claims 6-10 and 12 are withdrawn by the examiner from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Claim Objections Claims 1 and 11 are objected to because of the following informalities: HCFO-1224yd, HCFC-225ca and HCFC-225cb have to be preceded by either a full chemical name or a condensed chemical formula. Appropriate correction is required. Claims 2-5 and 13-15 are objected to as being dependent upon an objected base claim. 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. 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. Claim 11 is 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. The limitation “the amount” and “the total amount” render the claim vague and indefinite as it is unclear if the amount is based on moles, weight, weight%, mol% etc. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 11 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by International publication WO2013/099856A1 (WO’856; cited in IDS 07/26/2024 and machine translation attached herein). WO’856 teaches in Table 1 a composition F13 comprising HCFO-1224yd (11.13 wt%), HCFC-225ca (7.88 wt%) and HCFC-225cb (2.58 wt%), and wherein the amount of HCFO-1224yd is greater than the total amount of HCFC-225ca and HCFC-225cb (10.46 wt%). Allowable Subject Matter The subject matter of claims 1-5 and 13-15 is free of prior art reference. The closest prior art reference is Patent application publication number US2011/0319677A1 (US’677). US’677 teaches a process for the production of HCFO-1224yd by the process comprising: producing 1,1-dichloro-2,3,3,3-tetrafluoropropene (CFO-1214ya) by reacting 1,1-dichloro-2,2,3,3,3-pentafluoropropane (CF3CF2CHCl2, HCFC-225ca) and an alkali aqueous solution in the presence of a phase-transfer catalyst for a dehydrofluorination reaction ([0055]-[0056]), wherein the raw reactant can comprise 1,3-dichloro-1,2,2,3,3-pentafluoropropane (CHClFCF2CClF2, HCFC-225cb) ([0058]-[0059]); and reacting CFO-1214ya with hydrogen in the presence of a catalyst to produce 2,3,3,3-tetrafluoropropene (HFO-1234yf) as the main product and HCFO-1224yd as the intermediate ([0062] and [0067]). However, the reference fails to teach or suggest the instantly claimed process comprising contacting a combined feed of CF2ClCF2CHCl2 (HCFC-225cb) and CF3CF2CHCl2 (HCFC-225ca) with a catalyst and producing HCFO-1224yd in an amount ranging between about 14 mol % and 36 mol % HCFO-1224yd. Furthermore, there is no motivation in modifying the teachings of US’677 to arrive at the instantly claimed invention. In view of the foregoing, claims 1-5 and 13-15 are deemed novel and unobvious over the closest prior art reference. Conclusion Claims 1-5, 11 and 13-15 are objected and claim 11 is rejected. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MEDHANIT W BAHTA whose telephone number is (571)270-7658. The examiner can normally be reached Monday-Friday 8am-5pm. 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, Scarlett Goon can be reached at 571-270-5241. 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. /MEDHANIT W BAHTA/Primary Examiner, Art Unit 1692
Read full office action

Prosecution Timeline

Jul 26, 2024
Application Filed
Feb 24, 2025
Response after Non-Final Action
Aug 27, 2026
Non-Final Rejection mailed — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12759953
METHOD FOR STORING FLUORO-2-BUTENE
3y 6m to grant Granted Oct 13, 2026
Patent 12753140
CHLORINATED FLUOROAROMATICS AND METHODS OF USING SAME
4y 3m to grant Granted Oct 06, 2026
Patent 12753137
METHOD FOR STORING FLUOROBUTENE
3y 5m to grant Granted Oct 06, 2026
Patent 12753135
METHOD FOR PRODUCING REACTION GAS CONTAINING 1,1,2-TRIFLUOROETHANE (R-143) AND/OR (E,Z)-1,2-DIFLUOROETHYLENE (R-1132(E,Z))
3y 3m to grant Granted Oct 06, 2026
Patent 12753134
PROCESS FOR THE PRODUCTION OF TRIFLUOROETHYLENE
3y 5m to grant Granted Oct 06, 2026
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
81%
Grant Probability
99%
With Interview (+27.8%)
2y 1m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 797 resolved cases by this examiner. Grant probability derived from career allowance rate.

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