Prosecution Insights
Last updated: July 17, 2026
Application No. 18/918,195

SELECTIVE 1-HEXENE/1-OCTENE PRODUCTION WITH 1-DECENE

Non-Final OA §DP
Filed
Oct 17, 2024
Priority
Sep 10, 2021 — CIP of 11/498,889 +1 more
Examiner
FADHEL, ALI Z
Art Unit
Tech Center
Assignee
Chevron Phillips Chemical Company L.P.
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
85%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
373 granted / 489 resolved
+16.3% vs TC avg
Moderate +9% lift
Without
With
+9.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
25 currently pending
Career history
505
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
72.3%
+32.3% vs TC avg
§102
6.5%
-33.5% vs TC avg
§112
8.1%
-31.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 489 resolved cases

Office Action

§DP
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 Claims Claims 23-42, filed on 10/17/2024, are under consideration. Examiner’s Notes At first look, it was believed that the instant claims contained two groups of inventions: claims 23-29 directed to metathesis of C6 oligomers to decenes, and isomerizing the decenes to 1-decene with presence of photochemical irradiation, and claims 30-42 directed to metathesis of olefins to make internal olefins which are then isomerized with photochemical irradiation to make alpha-olefins with 4-19 carbons. The Attorney Mr. Todd Obijeski kindly elected claims 30-42 with traverse. However, after further review, the potential for election/restriction is withdrawn because the inventive concepts of metathesis and isomerization in presence of photochemical irradiation are included in both sets of claims. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 23-25, 29, 30-31, 33-38, and 40-42 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 10-13 and 20 of U.S. Patent No. 12,151,993. Although the claims at issue are not identical, they are not patentably distinct from each other because: For pending claim 23, the reference application in claim 10 recites the following: A process comprising: a) separating a composition comprising an oligomer product, the oligomer product comprising at least 85 mol % C6 olefins and at least 5 mol % C8+ olefins, into i) a first oligomer composition comprising C6 alkanes and at least 90 mol % C6 olefins, the C6 olefins comprising at least 90 mol % 1-hexene, and ii) a heavies stream comprising C8+ olefins; b) contacting a metathesis catalyst system with all or a portion of the first oligomer composition to form a first composition comprising C10 linear internal olefins; c) contacting all or a portion of the C10 linear internal olefins with a catalytic isomerization catalyst system in the presence of photochemical irradiation to form a second composition comprising 1-decene; and d) purifying the second composition to isolate a third composition comprising at least 90 mol % 1-decene. The disclosed amount of at least 85 mol% C6 olefins in the oligomer product overlaps, and includes, the instantly claimed amount of at least 91 mol% C6 olefins. The reference application suggests amounts of up to 94 mol% C6 olefins (claims 11-13) which reads on pending claims 24-25 and 29. For claims 30 and 37, the reference application (claim 20) teaches self-metathesis and/or cross metathesis of olefins to make metathesis product comprising internal olefins with 4-19 carbons, and then isomerizing the internal olefins to alpha olefins with isomerization in presence of photocatalytic irradiation. The disclosed types of olefins overlaps those recited in pending claims 31, 33-36, 38, and 40-42. Allowable Subject Matter Claims 26-28, 32 and 39 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: a search of metathesis and isomerization art did not locate a teaching or suggestion for methods that include metathesis of olefins to internal olefins, and isomerizing the internal olefins in presence of photochemical irradiation to provide alpha olefins. US 2015/0141721 discloses isomerizing olefins to make internal olefins, and metathesis of the internal olefins to make desired olefins such as propene, butenes, or hexenes. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALI Z FADHEL whose telephone number is (571)270-0267. The examiner can normally be reached M-F 9am-6pm PST. 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, In Suk Bullock can be reached at 571-272-5954. 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. /ALI Z FADHEL/Primary Examiner, Art Unit 1772
Read full office action

Prosecution Timeline

Oct 17, 2024
Application Filed
Jun 10, 2026
Non-Final Rejection mailed — §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12679788
STABLE PRODUCT OLIGOMER SELECTIVITY FROM OLEFIN OLIGOMERIZATION ON ZSM-5 ZEOLITES AND ZEOTYPES
2y 5m to grant Granted Jul 14, 2026
Patent 12673875
Method of Synthesizing a Molecular Sieve of MWW Framework Type
2y 11m to grant Granted Jul 07, 2026
Patent 12668556
CATALYSTS AND METHODS FOR METHANE DEHYDROGENATION
2y 11m to grant Granted Jun 30, 2026
Patent 12662435
OLEFIN PRODUCTION DEVICE AND OLEFIN PRODUCTION METHOD
2y 9m to grant Granted Jun 23, 2026
Patent 12662434
Direct Conversion of Methane to C2 and Higher Hydrocarbons
2y 9m to grant Granted Jun 23, 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
76%
Grant Probability
85%
With Interview (+9.0%)
2y 4m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 489 resolved cases by this examiner. Grant probability derived from career allowance rate.

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