Prosecution Insights
Last updated: August 06, 2026
Application No. 18/692,116

METHOD FOR PRODUCING VINYL CHLORIDE MONOMER FROM CARBON DIOXIDE

Non-Final OA §103
Filed
Mar 14, 2024
Priority
Sep 16, 2021 — provisional 63/244,864 +1 more
Examiner
WITHERSPOON, SIKARL A
Art Unit
Tech Center
Assignee
Oxy Low Carbon Ventures LLC
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
66%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
1425 granted / 1653 resolved
+26.2% vs TC avg
Minimal -20% lift
Without
With
+-20.3%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
34 currently pending
Career history
1673
Total Applications
across all art units

Statute-Specific Performance

§101
3.4%
-36.6% vs TC avg
§103
46.1%
+6.1% vs TC avg
§102
17.3%
-22.7% vs TC avg
§112
17.3%
-22.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1653 resolved cases

Office Action

§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 . Nucleotide and/or Amino Acid Sequence Disclosures REQUIREMENTS FOR PATENT APPLICATIONS CONTAINING NUCLEOTIDE AND/OR AMINO ACID SEQUENCE DISCLOSURES Items 1) and 2) provide general guidance related to requirements for sequence disclosures. 37 CFR 1.821(c) requires that patent applications which contain disclosures of nucleotide and/or amino acid sequences that fall within the definitions of 37 CFR 1.821(a) must contain a "Sequence Listing," as a separate part of the disclosure, which presents the nucleotide and/or amino acid sequences and associated information using the symbols and format in accordance with the requirements of 37 CFR 1.821 - 1.825. This "Sequence Listing" part of the disclosure may be submitted: In accordance with 37 CFR 1.821(c)(1) via the USPTO patent electronic filing system (see Section I.1 of the Legal Framework for Patent Electronic System (https://www.uspto.gov/PatentLegalFramework), hereinafter "Legal Framework") as an ASCII text file, together with an incorporation-by-reference of the material in the ASCII text file in a separate paragraph of the specification as required by 37 CFR 1.823(b)(1) identifying: the name of the ASCII text file; ii) the date of creation; and iii) the size of the ASCII text file in bytes; In accordance with 37 CFR 1.821(c)(1) on read-only optical disc(s) as permitted by 37 CFR 1.52(e)(1)(ii), labeled according to 37 CFR 1.52(e)(5), with an incorporation-by-reference of the material in the ASCII text file according to 37 CFR 1.52(e)(8) and 37 CFR 1.823(b)(1) in a separate paragraph of the specification identifying: the name of the ASCII text file; the date of creation; and the size of the ASCII text file in bytes; In accordance with 37 CFR 1.821(c)(2) via the USPTO patent electronic filing system as a PDF file (not recommended); or In accordance with 37 CFR 1.821(c)(3) on physical sheets of paper (not recommended). When a “Sequence Listing” has been submitted as a PDF file as in 1(c) above (37 CFR 1.821(c)(2)) or on physical sheets of paper as in 1(d) above (37 CFR 1.821(c)(3)), 37 CFR 1.821(e)(1) requires a computer readable form (CRF) of the “Sequence Listing” in accordance with the requirements of 37 CFR 1.824. If the "Sequence Listing" required by 37 CFR 1.821(c) is filed via the USPTO patent electronic filing system as a PDF, then 37 CFR 1.821(e)(1)(ii) or 1.821(e)(2)(ii) requires submission of a statement that the "Sequence Listing" content of the PDF copy and the CRF copy (the ASCII text file copy) are identical. If the "Sequence Listing" required by 37 CFR 1.821(c) is filed on paper or read-only optical disc, then 37 CFR 1.821(e)(1)(ii) or 1.821(e)(2)(ii) requires submission of a statement that the "Sequence Listing" content of the paper or read-only optical disc copy and the CRF are identical. Specific deficiencies and the required response to this Office Action are as follows: Specific deficiency - The Incorporation by Reference paragraph required by 37 CFR 1.821(c)(1) is missing or incomplete. See item 1) a) or 1) b) above. Required response – Applicant must provide: A substitute specification in compliance with 37 CFR 1.52, 1.121(b)(3) and 1.125 inserting the required incorporation-by-reference paragraph, consisting of: A copy of the previously-submitted specification, with deletions shown with strikethrough or brackets and insertions shown with underlining (marked-up version); A copy of the amended specification without markings (clean version); and A statement that the substitute specification contains no new matter. Claim Objections Claim 5 is objected to because of the following informalities: the parenthesis after the word water should be removed. Appropriate correction is required. 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. Claim(s) 1-7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Skinner (US 4,133,663). The instant claims are drawn to a method for producing a purified stream of vinyl chloride monomer comprising: PNG media_image1.png 264 628 media_image1.png Greyscale Skinner teaches a process for removing vinyl chloride from a vent gas stream, comprising charging a vent gas stream containing air, water, carbon dioxide, and vinyl chloride monomer through an inlet of a reactor and compressing to a pressure of about 65 psig (pressures of about 50 to 100 psig are preferred, but not mandatory); the vent gas stream is passed to a cooler to cool the gas stream to a temperature of about 20°F, thereby condensing most of the water and some of the vinyl chloride in the gas stream; removing the vapor and liquid using a phase separator, wherein water is removed from the phase separator at the bottom; vapor from the phase separator is removed and passed through a regenerating bed containing a molecular sieve for removing residual water and carbon dioxide to less than about 1 pp, wherein the vent gas leaving the bed is substantially free of water and carbon dioxide. The water/carbon dioxide free gas is directed to a heat exchanger and cooled to a temperature from -200°F to about -240°F, resulting in the condensing out of substantially all of the vinyl chloride monomer in the vent gas stream (cryogenic separation). The cooled vent gas stream is withdrawn from the heat exchanger and the condensed vinyl chloride is separated from the non-condensed gases in the phase separator. The vinyl chloride monomer is then withdrawn from the phase separator and discharged to a distillation column or production tank, having been purified for subsequent use in a polymerization process (col. 1, line 67 to col. 3, line26). The difference between Skinner and the instant claims is that the reference teaches a series of first steps, e.g., compressing and sending the vent stream gas to a cooler to condense out some of the vinyl chloride and most of the water, before sending the stream through a molecular sieve, which corresponds to the dehydration step recited in the instant claims. However, such a distinction is of no patentable import, since the instant claims use open-ended claim language, additional steps not expressly recited in the claims are not precluded from the process for producing a purified stream of vinyl chloride monomer. Therefore, the instant claims are rendered obvious by the process taught by Skinner. Allowable Subject Matter Claims 8 and 9 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. The following is a statement of reasons for the indication of allowable subject matter: claims 11-15, 17, 21-23, and 25-33 are drawn to processes for producing vinyl chloride not taught or suggested by prior art. For example, converting carbon dioxide and water into in organic intermediate in the presence of light and converting the intermediate into vinyl chloride in a bioreactor, as recited in the instant claim is not taught or suggested by prior art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SIKARL A WITHERSPOON whose telephone number is (571)272-0649. The examiner can normally be reached M-F 9am-9pm IFP. 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. /SIKARL A WITHERSPOON/Primary Examiner, Art Unit 1692
Read full office action

Prosecution Timeline

Mar 14, 2024
Application Filed
Jul 24, 2026
Non-Final Rejection mailed — §103 (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
86%
Grant Probability
66%
With Interview (-20.3%)
1y 9m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1653 resolved cases by this examiner. Grant probability derived from career allowance rate.

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