Prosecution Insights
Last updated: August 13, 2026
Application No. 18/775,741

CHARACTERIZATION OF MECHANICAL BIOMASS PARTICLE-PARTICLE AND PARTICLE-WALL INTERACTIONS

Non-Final OA §102§103
Filed
Jul 17, 2024
Priority
Jul 17, 2023 — provisional 63/527,200
Examiner
KIRKLAND III, FREDDIE
Art Unit
Tech Center
Assignee
The Penn State Research Foundation
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
976 granted / 1156 resolved
+24.4% vs TC avg
Moderate +10% lift
Without
With
+10.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
32 currently pending
Career history
1178
Total Applications
across all art units

Statute-Specific Performance

§101
4.8%
-35.2% vs TC avg
§103
36.1%
-3.9% vs TC avg
§102
39.2%
-0.8% vs TC avg
§112
14.8%
-25.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1156 resolved cases

Office Action

§102 §103
FIRST NON-FINAL REJECTION 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 . Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-3, 6, 7, 9-11, 14, 15, and 17-19 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Slosson et al. Identifying Sources of High Friction in Anatomical Fractions of Corn Stover, 2022 ASABE Annual Internation Meeting. With respect to claims 1, 9, and 17, Slosson teaches a measurement system for measuring flow properties of a material having a plurality of material particles (Inter-particle mechanical tester, figure 2) comprising: a plurality of sample holding plates (particle mounts, figure 3), each configured to securely hold a material particle (corn stover particles adhered to particle mounts, page 4); a first and a second sample holder (removable particle mount, figure 2), each configured to securely hold a first and second one of the plurality of sample holding plates (pages 3-4 , figure 2), the first sample holder being fixed during a measurement (the stationary particle mount, figure 2); a normal force actuator configured to apply a normal force between material particles held by the first and second sample holding plates (the normal force applicator, figure 2); a sliding force actuator configured to apply a sliding force between the first and second sample holding plates (the traction force application, figure 2); a normal force sensor configured to determine the normal force (the normal force sensor, figure 2); a sliding force sensor configured to determine an amount of sliding force transmitted from the sliding force actuator through the material particles held by the first and second sample holding plates (the traction force sensor, figure 2); and a processor configured to control the normal force and sliding force actuators, receive measurements from the normal force and sliding force sensors, and determine adhesion and friction characteristics between material particles held by the first and second sample holding plates (the friction coefficients of the samples are determined to determine adhering properties, pages 5-6). With respect to claims 2-3 and 10-11, Slosson teaches wherein each of the plurality of sample holding plates are configured to hold material particles using an adhesive that is a cyanoacrylate glue (particles are adhered to the mounts using Permatex Ultra Bond super glue, page 4). With respect to claims 6, 14, and 18, Slosson teaches wherein the processor is further configured to store the adhesion and friction characteristics for multiple combinations of the plurality of sample holding plates and to create a statistical model of interparticle forces, wherein the model divides material particles into predetermined particle types and identifies force characteristics for each particle type (the plurality of friction results of the samples and a statistical Wilcoxon signed-rank test is conducted, pages 5 and 6). With respect to claims 7, 15, and 19, Slosson teaches wherein the material is corn stover and the plurality of material particles comprise pieces of cob, husk, leaf, and stalk (pages 4 and 5). Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 8, 16, and 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Slosson et al. Identifying Sources of High Friction in Anatomical Fractions of Corn Stover, 2022 ASABE Annual Internation Meeting in view of Yi et al. Correlation between inter-particle mechanical properties and bulk flow properties of milled biomass, ASABE Annual International Meeting. With respect to claims 8, 16, and 20, Slosson teaches the claimed invention except wherein the material is forest residue and the plurality of material particles comprise wood chips, bark, needles, and twigs. Yi teaches testing biomass particles wherein the particles may be wood chips, bark, needles, and twigs (pages 3 and 4). Accordingly, it would have been obvious to one having ordinary skill in the art at the time the invention was made to modify the invention of Slosson with testing of the other biomass materials as taught by Yi in order to provide better predict biomass material behaviors. Claim(s) 4-5 and 12-13 is/are rejected under 35 U.S.C. 103 as being unpatentable over Slosson et al. Identifying Sources of High Friction in Anatomical Fractions of Corn Stover, 2022 ASABE Annual Internation Meeting in view of Werner et al. U.S. Patent Application Publication 2015/0293001. With respect to claims 4, 5, 12, and 13, Slosson teaches the claimed invention except wherein each of the plurality of sample holding plates have a mating face that is keyed such that it slides into each sample holder, and wherein each of the plurality of sample holding plates have a mating face that is keyed such that it is configured to mount to each sample holder in a plurality of predetermined orientations to facilitate testing the same particle in multiple selectable orientations. Werner teaches a universal tester having modular sample stages wherein modular sample stages 14 that is shaped (keyed) to engage with a base 24 of the tester 10 by guide pins 30, ball locks 34, and openings 38,40 (paragraphs 30-31, figures 3 and 4). Accordingly, it would have been obvious to one having ordinary skill in the art at the time the invention was made to modify the invention of Slosson with modular sample stages that engage with the tester as taught by Werner in order to provide a more versatile tester machine. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to FREDDIE KIRKLAND III whose telephone number is (571)272-2232. The examiner can normally be reached 9am-5pm. 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, John Breene can be reached at (571) 272-4107. 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. FREDDIE KIRKLAND III Primary Examiner Art Unit 2855 /Freddie Kirkland III/Primary Examiner, Art Unit 2855 7/11/2026
Read full office action

Prosecution Timeline

Jul 17, 2024
Application Filed
Jul 15, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12692798
APPARATUS FOR DIVERTING RADIATION EMITTED FROM SOURCE
2y 9m to grant Granted Jul 28, 2026
Patent 12687450
FUNCTIONALLY TESTING A LEAK DETECTION DEVICE FOR CHECKING THE SEALING TIGHTNESS OF AN INSPECTION OBJECT FILLED WITH A LIQUID
2y 10m to grant Granted Jul 21, 2026
Patent 12685076
PRESSURE PUCK DIAGNOSTIC WAFER
4y 8m to grant Granted Jul 14, 2026
Patent 12680894
Optical Soft Skin System for Multimodal Sensing
3y 2m to grant Granted Jul 14, 2026
Patent 12673708
GROUND SENSING UTILIZING ACTIVE SOURCES
2y 11m 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

1-2
Expected OA Rounds
84%
Grant Probability
95%
With Interview (+10.3%)
2y 2m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1156 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