Prosecution Insights
Last updated: July 17, 2026
Application No. 17/785,934

Method of producing nanocellulose films

Non-Final OA §112
Filed
Jun 16, 2022
Priority
Dec 16, 2019 — FI 20196087 +1 more
Examiner
HON, SOW FUN
Art Unit
1782
Tech Center
1700 — Chemical & Materials Engineering
Assignee
ÅBO AKADEMI UNIVERSITY
OA Round
2 (Non-Final)
58%
Grant Probability
Moderate
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
450 granted / 780 resolved
-7.3% vs TC avg
Strong +65% interview lift
Without
With
+64.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
28 currently pending
Career history
829
Total Applications
across all art units

Statute-Specific Performance

§103
91.6%
+51.6% vs TC avg
§102
2.6%
-37.4% vs TC avg
§112
5.5%
-34.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 780 resolved cases

Office Action

§112
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 . Response to Amendment Withdrawn Rejections The 35 U.S.C. 112(b) rejections of claims 1-8, 10-14,16-19, 21, 23-24, 26-34 are withdrawn due to Applicant’s amendment filed on November 12, 2025. New Rejections Claim Rejections - 35 USC § 112 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claims 1-2, 4-8, 10-14,16-19, 21, 23-24, 26-34 are rejected under 35 U.S.C. 112(b), as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor regards as the invention. It is unclear in independent claims 1 and 32, whether the recitation of “nanofibers, microfibers, nanofibrils or cellulose nanocrystals” where the nanocrystals are singled out as being cellulose nanocrystals, means that the nanofibers, microfibers, nanofibrils are not cellulose. Claims 2, 4-8, 10-14, 16-19, 21, 23-24, 26-31 depend on and include the subject matter of claim 1, and claims 33-34 depend on and include the subject matter of claim 32, but all fail to provide any solutions to the indefinite issues described above. Amendment and/or clarification accompanied by relevant citation(s) from the specification and/or teaching references, are required. Amendment and/or clarification accompanied by relevant citation(s) from the specification are required. Any inquiry concerning this communication should be directed to Sow-Fun Hon whose telephone number is (571)272-1492. The examiner is on a flexible schedule but can usually be reached during a regular workweek between the hours of 10:00 AM and 6:00 PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner's supervisor, Aaron Austin, can be reached at (571)272-8935. The fax phone number for the organization where this application or proceeding is assigned is (571)273-8300. Information regarding the status of an application may be obtained from the Patent Center (https://patentcenter.uspto.gov). Should you have any questions on the Patent Center system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /Sophie Hon/ Sow-Fun Hon Primary Examiner, Art Unit 1782
Read full office action

Prosecution Timeline

Jun 16, 2022
Application Filed
Aug 13, 2025
Non-Final Rejection mailed — §112
Nov 12, 2025
Response Filed
Feb 25, 2026
Non-Final Rejection mailed — §112
Mar 03, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

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COATING COMPOSITIONS
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3y 4m to grant Granted Jun 23, 2026
Patent 12637580
MINERAL INK FOR INKJET PRINTING ON A MINERAL SUBSTRATE
5y 7m to grant Granted May 26, 2026
Patent 12631813
POLYETHYLENE TEREPHTHALATE-BASED RESIN FILM, AND POLARIZER, TRANSPARENT CONDUCTIVE FILM, TOUCH PANEL, AND IMAGE DISPLAY DEVICE USING SAME
3y 1m to grant Granted May 19, 2026
Patent 12624237
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4y 9m to grant Granted May 12, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
58%
Grant Probability
99%
With Interview (+64.6%)
3y 2m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 780 resolved cases by this examiner. Grant probability derived from career allowance rate.

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