Prosecution Insights
Last updated: July 17, 2026
Application No. 17/789,067

1,3-BUTYLENE GLYCOL PRODUCT AND METHOD FOR PRODUCING 1,3-BUTYLENE GLYCOL

Final Rejection §103
Filed
Jun 24, 2022
Priority
Dec 28, 2019 — JP 2019-239974 +8 more
Examiner
PARSA, JAFAR F
Art Unit
1692
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Daicel Corporation
OA Round
2 (Final)
87%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
1082 granted / 1241 resolved
+27.2% vs TC avg
Moderate +9% lift
Without
With
+8.9%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 11m
Avg Prosecution
19 currently pending
Career history
1258
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
63.5%
+23.5% vs TC avg
§102
6.7%
-33.3% vs TC avg
§112
1.8%
-38.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1241 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 . Applicant’s arguments, see amendments/remarks, filed on January 21,2026, with respect to the claim rejections under 35 U.S.C. 112 and the claim rejection under 35 U.S.C. 103 as being unpatentable over Tsuji et al. (US 6,376,725 B1) in view of Koyama et al. (US 2003/0018224 Al) have been fully considered and are persuasive. The aforesaid claim rejections have been withdrawn. Claims 1 and 3-20 are pending. Claims 14-20 are withdrawn from consideration. Claims 1 and 1-13 under examination. Claims 1 and 3-13 are rejected on the ground of nonstatutory double patenting over claims 1, 4 and 11-19 of co-pending Application No. 17/788,823 are maintained for reasons of record as set forth in the office action dated October 21, 2025. 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 JAFAR F PARSA whose telephone number is (571)272-0643. The examiner can normally be reached M-F 10:00 AM-6:30PM. 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. /JAFAR F PARSA/Primary Examiner, Art Unit 1692
Read full office action

Prosecution Timeline

Jun 24, 2022
Application Filed
Oct 21, 2025
Non-Final Rejection mailed — §103
Jan 21, 2026
Response Filed
Apr 16, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12679726
Conversion of a hydrocarbon feed gas to synthesis gas for producing hydrocarbons
3y 6m to grant Granted Jul 14, 2026
Patent 12679791
METHOD FOR STORING FLUORO-2-BUTENE
3y 3m to grant Granted Jul 14, 2026
Patent 12679793
RECOVERY OF DIOLS FROM A MIXTURE
2y 10m to grant Granted Jul 14, 2026
Patent 12678760
USE OF RENEWABLE ENERGY IN METHANOL SYNTHESIS
2y 0m to grant Granted Jul 14, 2026
Patent 12673908
METHOD FOR PRODUCING FLUOROETHYLENE
3y 7m to grant Granted Jul 07, 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

3-4
Expected OA Rounds
87%
Grant Probability
96%
With Interview (+8.9%)
1y 11m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1241 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