Prosecution Insights
Last updated: May 29, 2026
Application No. 18/543,076

AZEOTROPE OR AZEOTROPE-LIKE COMPOSITIONS OF (Z)-1-CHLORO-2,3,3-TRIFLUOROPROP-1-ENE WITH ETHANOL OR METHANOL AND SOLVENT APPLICATIONS THEREOF

Final Rejection §102
Filed
Dec 18, 2023
Priority
Dec 20, 2022 — provisional 63/433,966
Examiner
ELHILO, EISA B
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Honeywell International Inc.
OA Round
2 (Final)
83%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
1197 granted / 1439 resolved
+18.2% vs TC avg
Strong +16% interview lift
Without
With
+15.8%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
36 currently pending
Career history
1461
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
61.5%
+21.5% vs TC avg
§102
17.4%
-22.6% vs TC avg
§112
12.5%
-27.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1439 resolved cases

Office Action

§102
DETAILED ACTION 1 This action is responsive to the amendment filed on March 30, 2026. 2 The rejection of the claims under 112, second paragraph, is withdrawn because of the applicant’s amendment. 3 The rejection of claims 2 and 3 under 103 are withdrawn because the prior art of Mitsuoka et al. (US’ 934 A1) does not teach the claimed percentages amounts of methanol as claimed in claims 2 and 3. 4 Claims 1, 4-5 and 16 are rejected under 102(a)1 for the reasons set forth in the previous Office action that mailed on 01/07/2026. Allowable Subject Matter 5 Claims 2-3, 6-15 and 17-18 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. The closest prior art of record (US’ 934 A1) does not teach the percentages of methanol as claimed in claims 2 and 3. The closest prior art of record (US’ 934 A1) also does not teach the limitations of claims 6-15 and 17-18. Response to Applicant’s Arguments Applicant's arguments filed 03/30/2026, have been fully considered but they are not persuasive. The rejection of the claims under 103 is withdrawn. Therefore, the applicant’s argument is rendered moot. Regarding the rejection of the claims under 102(1), as been anticipated by Mitsuoka et al. (US’ 934 A1), applicant argued that Mitsuoka et al. (US’ 934 A1) does not teach. Disclose or suggests the claimed azeotrope or azeotropic compositions of (Z)-1-chloro-2,3,3-trifluoroprop-i-ene (1233yd(Z) and methanol as claimed. The examiner respectfully, disagree with the above argument because Mitsuoka et al. (US’ 934 A1) teaches and discloses the following compositions: PNG media_image1.png 78 488 media_image1.png Greyscale (see page 11, Table 1-1, Example 3-6), wherein “HCFO-1233yd(Z)” is (Z)-1-chloro-2,3,3-trifluoroprop-1-ene as recited in the claimed specification at page 4, paragraphs, 0014-0017). The prior art of record (US’ 934 A1) teaches the same composition which inherently should has same boiling point as claimed in claim 4. The prior art of record (US’ 934 A1) also teaches a solvent composition that comprises other solvents include ethanol and isopropanol (co-solvents) as claimed in claims 5 and 16 (see page 2, paragraph, 0020). Mitsuoka et al. (US’ 934 A1) teaches all the limitations of the instant claims. Hence, Mitsuoka et al. (US’ 934 A1) anticipates the claims. Therefore, the rejection under 102(a) is proper and maintained. 6 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 nonprovisional extension fee (37 CFR 1.17(a)) 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 EISA B ELHILO whose telephone number is (571)272-1315. The examiner can normally be reached Monday-Friday, 7:00 AM to 3:30 PM. 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, Angela Brown-Pettigrew can be reached at (571)272-2817. 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. /EISA B ELHILO/Primary Examiner, Art Unit 1761
Read full office action

Prosecution Timeline

Dec 18, 2023
Application Filed
Jan 07, 2026
Non-Final Rejection mailed — §102
Mar 30, 2026
Response Filed
Apr 29, 2026
Final Rejection mailed — §102 (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
83%
Grant Probability
99%
With Interview (+15.8%)
1y 9m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1439 resolved cases by this examiner. Grant probability derived from career allowance rate.

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