Prosecution Insights
Last updated: July 17, 2026
Application No. 18/512,402

METHOD FOR SMOOTHING AND POLISHING METALS VIA ION TRANSPORT VIA FREE SOLID BODIES AND SOLID BODIES FOR PERFORMING THE METHOD

Non-Final OA §DP
Filed
Nov 17, 2023
Priority
Apr 28, 2016 — ES P201630542 +4 more
Examiner
VAN, LUAN V
Art Unit
1794
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Drylyte S L
OA Round
1 (Non-Final)
34%
Grant Probability
At Risk
1-2
OA Rounds
1y 2m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants only 34% of cases
34%
Career Allowance Rate
160 granted / 469 resolved
-30.9% vs TC avg
Strong +40% interview lift
Without
With
+40.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
24 currently pending
Career history
485
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
75.7%
+35.7% vs TC avg
§102
2.4%
-37.6% vs TC avg
§112
4.1%
-35.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 469 resolved cases

Office Action

§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 . Information Disclosure Statement The information disclosure statements (IDS) submitted on 11/17/2023 and 9/29/2025 have been considered by the examiner. 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. Claims 1-19 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-17 of U.S. Patent No. 10975491. Although the claims at issue are not identical, they are not patentably distinct from each other because Patent ‘491 claims a similar method for polishing a metal part, the method comprising: electrically coupling the metal part to a first pole of a current generator; and subjecting the part to friction with non-electrically conductive polymeric bodies charged with a negative electrical charge in a gaseous environment, the non-electrically conductive polymeric bodies retaining an aqueous solution of H2SO4 as an electrolyte, the non-electrically conductive polymeric bodies being electrically coupled to a second pole of the current generator and configured to polish the metal part via ion transport, the second pole having opposite polarity to the first pole. Claims 1-19 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1- 20 of U.S. Patent No. 11821102. Although the claims at issue are not identical, they are not patentably distinct from each other because Patent ‘102 claims a similar method for smoothing and polishing a surface of a metal part via ion transport by free solid bodies, the method comprising: connecting a part to be treated to a first pole of a power supply; and subjecting the surface of the metal part to friction with a plurality of particles comprising electrically conductive free solid bodies electrically connected to a second pole of the power supply, the second pole having an opposite polarity of the first pole, each of the free solid bodies comprises a non-electrically conductive structure containing an amount of electrolyte liquid to cause the free solid bodies to be electrically conductive and configured to polish the surface of the metal part via ion transport. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LUAN V VAN whose telephone number is (571)272-8521. The examiner can normally be reached Monday-Friday 8:30-5:00. 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, Patricia Mallari can be reached at (571) 272-4729. 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. LUAN V. VAN Supervisory Patent Examiner Art Unit 1795 /LUAN V VAN/Supervisory Patent Examiner, Art Unit 1795
Read full office action

Prosecution Timeline

Nov 17, 2023
Application Filed
Jun 02, 2026
Non-Final Rejection mailed — §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
34%
Grant Probability
75%
With Interview (+40.5%)
3y 10m (~1y 2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 469 resolved cases by this examiner. Grant probability derived from career allowance rate.

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