Prosecution Insights
Last updated: April 19, 2026
Application No. 17/610,574

PROCESSING CARTRIDGE FOR PORTABLE DRUG TESTING SYSTEM

Final Rejection §112
Filed
Nov 11, 2021
Examiner
KUMAR, SRILAKSHMI K
Art Unit
1700
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Buzzkill Labs Inc.
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
4y 1m
To Grant
71%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
305 granted / 551 resolved
-9.6% vs TC avg
Strong +15% interview lift
Without
With
+15.2%
Interview Lift
resolved cases with interview
Typical timeline
4y 1m
Avg Prosecution
415 currently pending
Career history
966
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
47.7%
+7.7% vs TC avg
§102
21.1%
-18.9% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 551 resolved cases

Office Action

§112
DETAILED ACTION Claim Rejections - 35 USC § 112 The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . 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 60-71 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. In claim 60, line 9, “one or more compartments” is not clear. There is no recitation of the cartridge including compartments. On line13, “engaged with interface” is not clear. On line 25, “wherein detection comprises” is not clear. Applicant claims “a detector”, not a step of detection. To clarify, the examiner recommends the following changes to claim 60: 60. (Currently Amended) A system comprising: a) an instrument comprising a cartridge interface configured to engage a cartridge; wherein the instrument comprises: i) a source of non-polar, organic solvent to extract THC reversibly bound to a phase transfer assembly; ii) a port in the cartridge interface connected to the source of non-polar, organic solvent that engages a solvent transfer port in the cartridge; and iii) one or more pumps, which pumps provide positive and/or negative pressure to one or more compartments in the cartridge; b) a cartridge engaged with the cartridge interface, wherein the cartridge comprises: i) one or more compartments; ii) a sample collector port configured to engage a sample collector; iii) a solvent transfer interface port engaged with the cartridge interface; iv) a product port; and 1) a filter layer comprising media configured to filter out particles; 2) a desiccant layer comprising media that adsorbs water, and 3) a phase transfer layer comprising media, wherein the media is reversibly bound to tetrahydrocannabinol (THC); wherein the sample collector port and the solvent transfer interface port communicate with a port at a first end of the phase transfer assembly, and the product port communicates with a port at a second end of the phase transfer assembly; and c) a detector communicating with the product port to detect THC eluted from the cartridge, wherein the detector uses thin layer chromatography. In claim 67, “sand and quartz sand” is unclear, as these items appear to overlap. Examiner suggests the following language from [0025]: 67. (Currently Amended) The system of claim 60, wherein the filter layer comprises inert beads comprising polystyrene, quartz, alumina or silica Claims 70-71 are clear, but amendments are suggested: 70. (Currently Amended) The system of claim 60, wherein the filter layer comprises first and second layers, wherein the first filter layer comprises particles having larger diameters than particles of the second layer. 71. (Currently Amended) The system of claim 60, wherein the cartridge further comprises a liquid sample comprising THC. Allowable Subject Matter Claims 60-71 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. Applicant’s arguments, filed 06 October 2025, with respect to the art rejection(s) of claim(s) have been fully considered and are persuasive, as they apply to new claims 60-71. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made under 35 USC 112(b). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 JILL WARDEN whose telephone number is (571)272-1267. The examiner can normally be reached Monday-Thursday 7:30 am - 5:00 pm, Friday, 7:30 am-11:30 am. 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. 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. /JILL A WARDEN/Supervisory Patent Examiner, Art Unit 1798
Read full office action

Prosecution Timeline

Nov 11, 2021
Application Filed
Mar 31, 2025
Non-Final Rejection — §112
Oct 06, 2025
Response Filed
Dec 18, 2025
Examiner Interview (Telephonic)
Dec 18, 2025
Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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ANTI-FRETTING COATING COMPOSITION AND COATED COMPONENTS
2y 5m to grant Granted Sep 23, 2025
Patent 12417853
ENGINEERED SIC-SIC COMPOSITE AND MONOLITHIC SIC LAYERED STRUCTURES
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MEMBRANE ELECTRODE ASSEMBLY MANUFACTURING PROCESS
2y 5m to grant Granted Sep 16, 2025
Patent 12410882
VACUUM ADIABATIC BODY
2y 5m to grant Granted Sep 09, 2025
Patent 12397261
METHOD FOR ELECTROCHEMICAL HYDROGEN SEPARATION FROM NATURAL-GAS PIPELINES
2y 5m to grant Granted Aug 26, 2025
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
55%
Grant Probability
71%
With Interview (+15.2%)
4y 1m
Median Time to Grant
Moderate
PTA Risk
Based on 551 resolved cases by this examiner. Grant probability derived from career allow rate.

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