Prosecution Insights
Last updated: April 19, 2026
Application No. 19/038,926

SYSTEMS AND METHODS FOR SEGREGATING INTO DUAL WASTE STREAMS OXIDIZABLE CATALYST MATERIAL FROM INERT SUPPORT MEDIA

Non-Final OA §DP
Filed
Jan 28, 2025
Examiner
PATEL, MIRAJ T
Art Unit
3655
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
The Maitland Company, LLC
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
1y 10m
To Grant
99%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allow Rate
82 granted / 98 resolved
+31.7% vs TC avg
Strong +22% interview lift
Without
With
+22.2%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 10m
Avg Prosecution
12 currently pending
Career history
110
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
43.5%
+3.5% vs TC avg
§102
22.5%
-17.5% vs TC avg
§112
25.2%
-14.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 98 resolved cases

Office Action

§DP
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 . Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claim 1, 3 and 6-20 rejected on the ground of nonstatutory double patenting as being unpatentable over multiple claims of U.S. Patent Application No. 18/187637. Although the claims at issue are not identical, they are not patentably distinct from each other because the claims of 18/187637, with interpretation from the specification, are found to be the same as that of the claimed invention. Current Application 19/038926 Application 18/187637 (Claim 1) A system for segregating a mixture of oxidizable catalyst material, grading material, and inert support media, comprising: an enclosure configured to contain inert gas; a plurality of stacked screens within the enclosure; at least one mixture inlet in the enclosure positioned to enable delivery of the mixture to an uppermost stacked screen of the plurality of stacked screens; and at least one inert support media outlet associated with at least one of the plurality of stacked screens, wherein the at least one inert support media outlet directs separated inert support media to a location outside the enclosure. at least one motor capable of moving the plurality of stacked screens to cause the oxidizable catalyst material and the grading material to separate from and migrate to a location beneath the inert support media; (Claim 1) A system for segregating a mixture of oxidizable catalyst material and inert support media (the mixture is also described to have grading material in the specification paragraph 002), the system comprising: an enclosure configured to contain inert gas; a plurality of stacked screens within the enclosure, the stacked screens having openings that decrease in size from a top of the stack to a bottom of the stack; a mixture inlet in the enclosure positioned to enable delivery of the mixture to an uppermost stacked screen; at least one inert support media outlet associated with at least one of the plurality of stacked screens, wherein the at least one inert support media outlet directs separated inert support media to a location out of the enclosure; at least one motor for moving the stacked screens to cause the oxidizable catalyst material in the mixture to separate from and migrate to a location beneath the inert support media; wherein the inert gas inlet is located in a lower portion of the enclosure to enable the inert gas to flow over the oxidizable catalyst material and exit the enclosure through a top portion of the enclosure. (Claim 3) an oxidizable catalyst material outlet associated with at least another of the plurality of stacked screens, wherein the oxidizable catalyst material outlet directs separated oxidizable catalyst material out of the enclosure. (Claim 1) a catalyst material outlet associated with at least another of the plurality of stacked screens, wherein the catalyst material outlet directs separated oxidizable catalyst material to a location outside the enclosure; (Claim 6) an inert gas inlet associated with the enclosure for conveying the inert gas to the enclosure. (Claim 1) and an inert gas inlet associated with the enclosure for permitting the inert gas to enter the enclosure to displace oxygen within the enclosure and thereby limit oxidation of the oxidizable catalyst material while the at least one motor moves the plurality of stacked screens (Claim 7) wherein the inert gas inlet is located in a lower portion of the enclosure to enable the inert gas to flow over the oxidizable catalyst material and exit the enclosure through a top portion of the enclosure. (Claim 1) wherein the inert gas inlet is located in a lower portion of the enclosure to enable the inert gas to flow over the oxidizable catalyst material and exit the enclosure through a top portion of the enclosure. (Claim 8) a sensor for detecting a reduction of oxygen in the enclosure. (Claim 4) a sensor for detecting a reduction of oxygen in the enclosure. (Claim 9) a mixture conveyor for conveying the mixture to the at least one mixture inlet, wherein the mixture conveyor is in flow communication with the enclosure and is enclosed to contain the inert gas. (Claim 5) a mixture conveyor for conveying the mixture to the mixture inlet, wherein the mixture conveyor is in flow communication with the enclosure and is enclosed to contain the inert gas. (Claim 10) at least one flow bin associated with an end of the mixture conveyor for supplying the mixture to the mixture conveyor, wherein the mixture conveyor is sealingly engaged with the flow bin and the enclosure to contain the inert gas. (Claim 6) at least one flow bin associated with an end of the mixture conveyor for supplying the mixture to the mixture conveyor, wherein the mixture conveyor is sealingly engaged with the flow bin and the enclosure to contain the inert gas. (Claim 11) wherein the mixture conveyor includes a screw auger. (Claim 7) wherein the mixture conveyor includes a screw auger. (Claim 12) wherein the mixture conveyor includes a controllable inlet for permitting selective passage of the mixture while limiting loss of the inert gas. (Claim 8) wherein the mixture conveyor includes a controllable inlet for permitting selective passage of the mixture while limiting loss of the inert gas. (Claim 13) a regulator for at least periodically supplying additional inert gas to the enclosure to account for loss of the inert gas. (Claim 9) a regulator for at least periodically supplying additional inert gas to the enclosure to account for loss of the inert gas. (Claim 14) wherein the enclosure and plurality of stacked screens are configured as a portable unit for movement between industrial sites. (Claim 13) wherein the enclosure and plurality of stacked screens are configured as a portable unit for movement between industrial sites. (Claim 15) a grinder for grinding the separated oxidizable catalyst material into a powder. (Claim 14) a grinder for grinding the separated oxidizable catalyst material into a powder. (Claim 16) an observation window in an outer wall of the enclosure, and an illuminator within the enclosure to enable external observation of the mixture segregation. (Claim 17) an observation window in an outer wall of the enclosure, and an illuminator within the enclosure to enable external observation of the mixture segregation. (Claim 17) wherein the inert gas comprises, at least in part, nitrogen. (Claim 18) wherein the inert gas tank contains nitrogen. (Claim 18) a pressurized inert gas tank flow-connected to the enclosure. (Claim 12) a pressurized inert gas tank flow-connected to the enclosure. (Claim 19) an air lock associated with the inert support media outlet for limiting the inert gas from leaving the enclosure via the inert support media outlet. (Claim 10) an air lock associated with the inert support media outlet for limiting the inert gas from leaving the enclosure via the inert support media outlet. (Claim 20) an air lock associated with the oxidizable catalyst material outlet for limiting the inert gas from leaving the enclosure via the oxidizable catalyst material outlet. (Claim 11) an air lock associated with the catalyst material outlet for limiting the inert gas from leaving the enclosure via the catalyst material outlet. Allowable Subject Matter Claim 1, and its dependent claims, would be allowable if the obviousness double patenting rejection is overcome. The closest prior art: The solid separator of Ross (US 11111743 B2) does not teach “at least one motor capable of moving the plurality of stacked screens to cause the oxidizable catalyst material and the grading material to separate from and migrate to a location beneath the inert support media; and at least one inert support media outlet associated with at least one of the plurality of stacked screens, wherein the at least one inert support media outlet directs separated inert support media to a location outside the enclosure.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to MIRAJ T PATEL whose telephone number is (571)272-9330. The examiner can normally be reached M-F 8:00-5:00. 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, Jacob Scott can be reached on 571-270-3415. 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. /M.T.P./Examiner, Art Unit 3655 /JACOB S. SCOTT/Supervisory Patent Examiner, Art Unit 3655
Read full office action

Prosecution Timeline

Jan 28, 2025
Application Filed
Feb 11, 2026
Non-Final Rejection — §DP (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

1-2
Expected OA Rounds
84%
Grant Probability
99%
With Interview (+22.2%)
1y 10m
Median Time to Grant
Low
PTA Risk
Based on 98 resolved cases by this examiner. Grant probability derived from career allow rate.

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