Prosecution Insights
Last updated: October 01, 2026
Application No. 18/243,225

HALOETHER, METHOD FOR PRODUCING SAME, VINYL ETHER, AND METHOD FOR PRODUCING SAME

Non-Final OA §102§103
Filed
Sep 07, 2023
Priority
Mar 09, 2021 — JP 2021-037781 +1 more
Examiner
BAHTA, MEDHANIT W
Art Unit
1692
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Daikin Industries Ltd.
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
640 granted / 794 resolved
+20.6% vs TC avg
Strong +28% interview lift
Without
With
+28.2%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
44 currently pending
Career history
829
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
40.4%
+0.4% vs TC avg
§102
15.7%
-24.3% vs TC avg
§112
29.2%
-10.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 794 resolved cases

Office Action

§102 §103
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 . Status of the Claims The amendment filed on 06/10/2026 has been entered. Claim 22 has been amended. Thus claims 1-8 and 22-28 are currently pending. Election/Restrictions Applicant's election with traverse of Group I, claims 1-8 in the reply filed on 06/10/2026 is acknowledged. The traversal is on the ground(s) that in view of the amendment of claim 22 which incorporates the features of claim 1. This is not found persuasive because as stated in the previous Office Action, there is a serious examination burden as the inventions require a different field of search (e.g., searching different classes/subclasses or electronic resources, or employing different search strategies or search queries). Invention II of claims 22-28 is drawn to a method for producing compound of formula (5a) which includes a different process in addition to the scope of Invention I, claims 1-8. The requirement is still deemed proper and is therefore made FINAL. Specification The specification is objected to as failing to provide proper antecedent basis for the claimed subject matter. See 37 CFR 1.75(d)(1) and MPEP § 608.01(o). Correction of the following is required: The working data for the production of the production of compound of formula (4a), Examples 1-16, do not appear to be using the compound of formula (2a) as instantly claimed. For purpose of discussion, Example 1 is reproduced herein PNG media_image1.png 103 568 media_image1.png Greyscale PNG media_image2.png 242 567 media_image2.png Greyscale In the above, potassium fluoride and perfluorohexanoyl fluoride form a compound specie of formula (1), as described on pages 15-16: PNG media_image3.png 198 565 media_image3.png Greyscale PNG media_image4.png 269 559 media_image4.png Greyscale Furthermore, the example uses iodine monochloride as the halogenating agent of the instant claim. However, nowhere in the above example or in the other examples that produce compounds for formula (4a) use any compounds that fall under the claimed compound of formula (2a). 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 – Claims 1-5 and 7-8 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Litt (Litt, M. et al. Patent number US3,453,333A). Regarding claim 1, Litt teaches in Table 1 a method for producing compound species that fall under the claimed formula (4a), the method comprising of reacting organic salt intermediates (species of the claimed formula (1)) in the presence of I2, Cl2 or Br2 as halogenating agent with olefins (species of the claimed formula (2a)). Regarding claim 2, the halogenating agents in Litt are species of the claimed formula (3a). Regarding claim 3, the corresponding Y+ of the organic salt intermediates in Litt are K+ or Cs+. Regarding claims 4-5, the corresponding R1 in Litt are C3 alkyl groups. Regarding claim 7, the corresponding R2a and R3a in some of the compounds of Litt are each independently H or C2 alkyl. Regarding claim 8, the reactions in Litt are performed in the absence of a catalyst. Claim Rejections - 35 USC § 103 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 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1 and 6 is rejected under 35 U.S.C. 103 as being unpatentable over Litt (Litt, M. et al. Patent number US3,453,333A) in view Smolecule (“1-Chloro-1-fluoroethene” Deposit and available date Dec. 18, 2020). The teachings of Litt have been set forth above. Regarding claim 6, Litt fails to teach or suggest that the corresponding R4a is F or fluoroalkyl group. The deficiency is however cured by Smolecule. Smolecule teaches 1-chloro-1-fluoroethene as an olefin that is commercially available before the effective filing date of the instant invention, in which the corresponding X1a is Cl, R4a is F and R2a and R3a are each H. Thus, replacing the olefin of Litt with that of Smolecule, and conducting the reaction of Litt, a skilled artisan would have a reasonable expectation of success in yielding a compound species of formula (4a), wherein R4a is F. In accordance to MPEP 2143, the Supreme Court in KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398, 415-421, 82 USPQ2d 1385, 1395-97 (2007) identified a number of rationales to support a conclusion of obviousness which are consistent with the proper “functional approach” to the determination of obviousness as laid down in Graham and discussed circumstances in which a patent might be determined to be obvious. In this case, at least prong (B) simple substitution of one known element for another to obtain predictable results applies. It would thus have been prima facie obvious to a skilled artisan before the effective filing date of the instant invention to perform a method for producing a compound of formula (4a), the method comprising step 1a of allowing a compound represented by formula (1) to react, in the presence of a halogenating agent, with a compound represented by formula (2a), wherein R4a is F or a fluoroalkyl group in view of the combination of Litt and Smolecule. Citation of Relevant Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Evans (Evans, F. W. et al. “Formation of Fluorinated Ethers in a Modified Halohydrin Reaction” J. Org. Chem. (1968), 33(5), 1839-44) teaches in Tables III and VI a method for producing compound species of the claimed formula (4a). Conclusion Claims 1-8 are rejected and no claims are allowed. 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

Sep 07, 2023
Application Filed
Aug 10, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735369
Selective Transition Metal Catalyzed Deuterium Incorporation Into Alkyne and Alkene Functionalities
3y 4m to grant Granted Sep 15, 2026
Patent 12735375
PROCESS
3y 6m to grant Granted Sep 15, 2026
Patent 12729174
CONVERTING NATURAL GAS TO DIMETHYL ETHER
3y 8m to grant Granted Sep 08, 2026
Patent 12721800
PHOSPHONATES AND N-HALAMINES COMPOSITIONS FOR TARTAR REMOVAL
3y 2m to grant Granted Sep 01, 2026
Patent 12715882
ADDUCT COMPRISING AT LEAST A METAL SELECTED FROM GOLD, SILVER AND COPPER AND AN ADDUCT OF A CARBON ALLOTROP AND A PYRROLIC COMPOUND
3y 6m to grant Granted Aug 25, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
81%
Grant Probability
99%
With Interview (+28.2%)
2y 1m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 794 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month