Prosecution Insights
Last updated: April 19, 2026
Application No. 18/345,309

ENHANCED EXTRACTION OF NATURAL PRODUCTS FROM BIOMASS

Non-Final OA §112
Filed
Jun 30, 2023
Examiner
ELHILO, EISA B
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The Board Of Trustees Of The University Of Illinois
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
1y 11m
To Grant
99%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
1184 granted / 1425 resolved
+18.1% vs TC avg
Strong +16% interview lift
Without
With
+15.9%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 11m
Avg Prosecution
33 currently pending
Career history
1458
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
37.5%
-2.5% vs TC avg
§102
19.2%
-20.8% vs TC avg
§112
25.1%
-14.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1425 resolved cases

Office Action

§112
Claim 19-21 are pending in this application. DETAILED ACTION 1 This action is responsive to the applicant’s election received by the office on November 26, 2025. Election of claims 19-20 is acknowledged. Claims 1-12 are withdrawn from further consideration by the examiner, 37 CFR 1.142(b), as being drawn to a non-elected invention. Therefore, claims 19-20 and the newly added claim 21 are pending in this application. Claim Rejections - 35 USC § 112 2 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 19-21 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 19 recites “a composition comprising about 15-65 µg/g anthocyanin, about 1.6-2.1 g/100 g glucose, about 1.5-1.9 g/100 g xylose, about 0.3-0.8 g/100 g arabinose, about 0.03-0.2 g/100 g lactic acid, about 0.1-0.3 g/100 g acetic acid, about 0-0.03 g/100 g furfural, and 0-0.3 g/100 g 5-hydroxymethylfurfural”. The claim is indefinite based on the weight of ingredients in the composition. The weight of the ingredients is ambiguous, for example the claim recites “1.5-1.9 g/100 g xylose”, did the applicant mean xylose in amount of about 1.5-1.9 g/ 100 g of the total weight of composition? Also “about15-65 µg/g anthocyanin”, did the applicant mean anthocyanin in the amount of about 15-65 µg/ g of the total weight of composition? Clarification and/or correction is required. Claim 20 recites “a composition comprising about 38.7 ± 26.9 µg/g anthocyanin, 1.85 ± 0.07g/100 g glucose, 1.51± 0.4 g/100 g xylose, 0.76 ± 0.4 g/100 g arabinose, 0.17± 0.01 g/100 g lactic acid, about 0.18 ± 0.00 g/100 g acetic acid, less than 0.01g/100 g furfural, and less than 0.01 g/100 g 5-hydroxymethylfurfural”. The claim is indefinite based on the weight of ingredients in the composition. The weight of the ingredients is ambiguous, for example the claim recites “1.51± 0.4 g/100 g xylose”, did the applicant mean xylose in amount of 1.51± 0.4 g/ 100 g of the total weight of composition? Also “ 38.7 ± 26.9 µg/g anthocyanin”, did the applicant mean anthocyanin in the amount of 38.7 ± 26.9 µg/ g of the total weight of composition? Clarification and/or correction is required. Claim 21 recites “a composition comprising about 15-65 µg/g anthocyanin”, “less than 0.01 g/100 g furfural” and “less than 0.01 g/100 g 5-hydroxymethylfurfural” . The claim is indefinite based on the weight of ingredients in the composition. The weight of the ingredients is ambiguous, for example the claim recites “about 15-65 µg/g anthocyanin”, did the applicant mean anthocyanin in amount of about 15-65 µg/ g of the total weight of composition? The claim also recites “less than 0.01 g/100 g furfural”. Did the applicant mean furfural in the amount of less than 0.01 g/100 g of the total weight of the composition? Clarification and/or correction is required. Claim 21 recites the limitations “less than 0.01 g/100 g furfural” and “less than 0.01 g/100 g 5-hydroxymethylfurfural”. The phrase “less than”, make the claim indefinites because it is unclear what is the lower limit of the range ? Is the lower limit of the range is 0? or more than 0? Clarification is required. Claim 21 is indefinite because the Markush languages of the claim is improper. A composition comprising ” Should be followed by “A, B, C and D” or followed by “A, B, C or D” not followed by “A, B and C and D. Correction is required. Claim 21 recites the limitation “ A composition comprising about 15-65 15-65 µg/g anthocyanin and glucose, xylose, arabinose, lactic acid and acetic acid”. It is unclear if the claimed weight “15-65 µg” referred to the weight of g anthocyanin? or the claimed weight “15-65 µg” referred to g of all ingredients of anthocyanin, glucose, xylose, arabinose, lactic acid and acetic acid?. Clarification and/or correction are/is required. Claim 21 recites in lines 6-7, the limitation “at the temperature”. It is unclear if the temperature is referred to the temperature of about 130 OC to about 190 OC or referred to other temperature?. Clarification is required. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to EISA B ELHILO whose telephone number is (571)272-1315. The examiner can normally be reached Monday-Friday, 7:00 AM to 3:30 PM. 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, Angela Brown-Pettigrew can be reached at (571)272-2817. 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. /EISA B ELHILO/Primary Examiner, Art Unit 1761
Read full office action

Prosecution Timeline

Jun 30, 2023
Application Filed
Dec 19, 2025
Non-Final Rejection — §112
Mar 26, 2026
Response Filed
Mar 26, 2026
Response after Non-Final Action

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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
83%
Grant Probability
99%
With Interview (+15.9%)
1y 11m
Median Time to Grant
Low
PTA Risk
Based on 1425 resolved cases by this examiner. Grant probability derived from career allow rate.

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