Prosecution Insights
Last updated: October 02, 2026
Application No. 18/005,759

HYDROCARBYL-MODIFIED METHYLALUMINOXANE COCATALYST FOR BIS-PHENYLPHENOXY METAL-LIGAND COMPLEXES

Non-Final OA §112
Filed
Jan 17, 2023
Priority
Jul 17, 2020 — provisional 63/053,354 +1 more
Examiner
BRANCH, CATHERINE S
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Dow Global Technologies LLC
OA Round
3 (Non-Final)
86%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allowance Rate
825 granted / 963 resolved
+20.7% vs TC avg
Minimal +4% lift
Without
With
+3.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
15 currently pending
Career history
988
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
41.4%
+1.4% vs TC avg
§102
19.2%
-20.8% vs TC avg
§112
31.2%
-8.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 963 resolved cases

Office Action

§112
DETAILED ACTION This communication responds to the Request for Continued Examination filed February 23, 2026. Claims 1-3, 5-9, 11, 12, 14-17, 19, 21, 24, and 26-28 are currently pending. Claims 2 and 3 are REJECTED under 35 USC 112(d). Claims 1, 5-9, 11, 12, 14-17, 19, 21, 24, and 26-28 are ALLOWED. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 2 and 3 are rejected under 35 U.S.C. 112(d) as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Regarding claims 2 and 3, the recited amounts of modified-hydrocarbyl methylaluminoxane are broader than the recited amount in claim 1, in that the lower limits in claims 2 and 3 may be interpreted to be under 2.5 mol percent. For example, the amount in claim 2 is simply “less than 25 mole percent,” which may be interpreted to mean any amount between a non-zero amount and 25 mole percent. Applicant may cancel the claims, amend the claims to place the claims in proper dependent form, rewrite the claims in independent form, or present a sufficient showing that the dependent claims comply with the statutory requirements. Allowable Subject Matter Claims 1, 5-9, 11, 12, 14-17, 19, 21, 24, and 26-28 are allowed. The following is a statement of reasons for the indication of allowable subject matter: The present claims are allowed for the reasons set forth in the November 21, 2025 Office Action at paragraphs 16-19, which are incorporated by reference herein. In addition, the closest prior art references do not teach or fairly suggest a modified-hydrocarbyl methylaluminoxane with an AlRA1RB1RC1 within the claimed range. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CATHERINE S BRANCH whose telephone number is (571)270-3539. The examiner can normally be reached Monday through Friday. 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, Joseph Del Sole can be reached at 571-272-1130. 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. CATHERINE S. BRANCH Primary Examiner Art Unit 1763 /CATHERINE S BRANCH/Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

Show 5 earlier events
Sep 16, 2025
Examiner Interview Summary
Oct 23, 2025
Response Filed
Nov 21, 2025
Final Rejection mailed — §112
Feb 19, 2026
Examiner Interview Summary
Feb 19, 2026
Applicant Interview (Telephonic)
Feb 23, 2026
Request for Continued Examination
Mar 02, 2026
Response after Non-Final Action
Sep 23, 2026
Non-Final Rejection mailed — §112 (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
86%
Grant Probability
89%
With Interview (+3.5%)
2y 4m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 963 resolved cases by this examiner. Grant probability derived from career allowance rate.

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