Prosecution Insights
Last updated: August 06, 2026
Application No. 18/638,012

APPARATUS AND METHODS FOR FILTERING METALS

Final Rejection §112§DP
Filed
Apr 17, 2024
Priority
May 31, 2016 — provisional 62/343,489 +3 more
Examiner
MCGUTHRY BANKS, TIMA MICHELE
Art Unit
1733
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Alcoa Canada Co.
OA Round
2 (Final)
82%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 82% — above average
82%
Career Allowance Rate
961 granted / 1177 resolved
+16.6% vs TC avg
Minimal +2% lift
Without
With
+2.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
55 currently pending
Career history
1232
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
40.0%
+0.0% vs TC avg
§102
16.3%
-23.7% vs TC avg
§112
36.4%
-3.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1177 resolved cases

Office Action

§112 §DP
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 . Election/Restrictions Claim 2 is withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 10/27/2025. Status of Claims Claim 1 is currently amended, Claim 2 is withdrawn, and Claims 3-20 are new. Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they include the following reference character(s) not mentioned in the description: reference numbers 24’ and 12S. Corrected drawing sheets in compliance with 37 CFR 1.121(d), or amendment to the specification to add the reference character(s) in the description in compliance with 37 CFR 1.121(b) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the “gap” in Claim 12 must be shown or the feature(s) canceled from the claim(s). No new matter should be entered. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL - The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1 and 3-20 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. In Claim 1, the limitation “a filter at least partially disposed” is considered new matter, emphasis added. Neither the specification or drawings recite or teach the filter being at least partially disposed other than “[o]ther mounting positions and orientations may be utilized.” In Claim 3, the limitation “the force vector is non-parallel” is considered new matter, emphasis added. Neither the specification or drawings recites or teaches the direction of the force vector as “non-parallel.” In Claim 8, the limitations “proximal a sidewall” and “proximal a bottom” are considered new matter, emphasis added. The specification does not describe or recite the location of the first or second vibrator as being “proximal” in either location in the receptacle as claimed. FIG. 5 may exemplify a proximal, or centered, vibrator 224B on the bottom of the metal shell, but it is not clear if vibrators 224A and 224C are centered on the sidewall of the metal shell. In Claim 10, the limitation “at least partially disposed within the metal shell” is considered new matter. Neither the specification nor the drawings recite or teach a vibrator within the metal shell as claimed. “[A]ssembled to the shell” as recited in [0047] is not the same as “at least partially disposed within.” In Claim 12, the limitation and use of “gap” is new matter, since the specification does not recite this limitation. FIG. 4 demonstrates vibrators 124A, 124B, and 124C interposed between the refractory liner 112R and shell 112S, but the location of the vibrators is not described as a “gap.” Claims dependent on any of the rejected claims are likewise rejected under this statute. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) 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. Claims 1, 4-7, 9, 11, 12, and 16-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. 11,541,454 B2 in view of Fixman (US 2,235,740). U.S. Patent No. ‘454 does not claim the receptacle comprises a metal shell as instantly claimed. Fixman teaches a furnace wall structure formed of refractory tiles carried on ferrous castings by an exterior framework of steel (column 1, lines 3-5). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention for the receptable in U.S. Patent No. ‘454 to have a refractory tiles carried on ferrous castings and an exterior framework of steel as taught by Fixman, since Fixman teaches a furnace wall that is simple, economic, and durable under wide temperature ranges (column 1, lines 5-9). Allowable Subject Matter Claims 2, 3, 8, 10, and 13-15 are free from prior art rejections. The following is a statement of reasons for the indication of allowable subject matter: Holsgrove et al (US 5,322,546) does not suggest the porous media filter is shaken or vibrated as in Claim 1. Belley et al (US 2008/0053275 A1) teaches priming a filter for molten metal but does not suggest the filter is shaken or vibrated as in Claim 1. Response to Arguments Applicant’s arguments with respect to claim 1 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. 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 Tima M. McGuthry-Banks whose telephone number is (571)272-2744. The examiner can normally be reached Monday through Friday, 7:30 am to 4:00 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, Keith D. Hendricks can be reached at (571) 272-1401. 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. Tima M. McGuthry-Banks Primary Examiner Art Unit 1733 /Tima M. McGuthry-Banks/Primary Examiner, Art Unit 1733
Read full office action

Prosecution Timeline

Apr 17, 2024
Application Filed
Nov 18, 2025
Non-Final Rejection mailed — §112, §DP
May 18, 2026
Response Filed
Jun 16, 2026
Final Rejection mailed — §112, §DP (current)

Precedent Cases

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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
82%
Grant Probability
84%
With Interview (+2.2%)
2y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1177 resolved cases by this examiner. Grant probability derived from career allowance rate.

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