Prosecution Insights
Last updated: October 24, 2026
Application No. 18/490,265

PROTECTIVE COATING FOR ELECTROSTATIC CHUCKS

Final Rejection §DOUBLEPATENT
Filed
Oct 19, 2023
Priority
Mar 20, 2018 — divisional of 11/086,233 +1 more
Examiner
VETERE, ROBERT A
Art Unit
1712
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Lam Research Corporation
OA Round
4 (Final)
62%
Grant Probability
Moderate
5-6
OA Rounds
7m
Est. Remaining
74%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
558 granted / 907 resolved
-3.5% vs TC avg
Moderate +13% lift
Without
With
+12.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
36 currently pending
Career history
950
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
63.0%
+23.0% vs TC avg
§102
13.4%
-26.6% vs TC avg
§112
17.8%
-22.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 907 resolved cases

Office Action

§DOUBLEPATENT
DETAILED ACTION An amendment, amending claim 1, was entered on 8/19/26. 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 . Response to Arguments Applicant persuasively argues that Kulshreshtha fails to teach removing an entirety of the first coating and then depositing a second coating in situ to form the chuck as claimed in claim 1. This is persuasive and the rejection of claims in view of Kulshreshtha is withdrawn. However, the amendment to claim 1 does not overcome the double patenting rejection. 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 1-3 and 9 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1, 8 and 10 of U.S. Patent No. 11,086,233 in view of Kulshreshtha (US 2016/01064264). The ‘233 Patent claims the same subject matter as claims 1-3 of the instant application except for the steps of chucking and processing. However, Kulshreshtha explains that the coated chuck is used by chucking a substrate and then processing the substrate at the claimed processing conditions (Abst.; ¶ 0057). Combining prior art elements according to known methods to yield predictable results is prima facie obvious. MPEP § 2143. Thus, it would have been obvious to one of ordinary skill at the time of filing to have used the chuck of the ’233 Patent in the manner disclosed in Kulshreshtha with the predictable expectation of success. With respect to the limitation that the second coating is configured to generate sufficient electrostatic force to clamp the substrate at the elevated temperature, this feature is considered inherent because the function of a chuck is to clamp at the processing temperature. Allowable Subject Matter Claims 4-7 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. 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 Robert A Vetere whose telephone number is (571)270-1864. The examiner can normally be reached M-F 7:30-4:00 EST. 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, Michael Cleveland can be reached at (571) 270-1034. 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. /ROBERT A VETERE/ Primary Examiner, Art Unit 1712
Read full office action

Prosecution Timeline

Show 2 earlier events
Dec 10, 2025
Response Filed
Feb 11, 2026
Final Rejection mailed — §DOUBLEPATENT
Apr 07, 2026
Response after Non-Final Action
Apr 17, 2026
Request for Continued Examination
Apr 20, 2026
Response after Non-Final Action
May 21, 2026
Non-Final Rejection mailed — §DOUBLEPATENT
Aug 19, 2026
Response Filed
Oct 05, 2026
Final Rejection mailed — §DOUBLEPATENT (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

5-6
Expected OA Rounds
62%
Grant Probability
74%
With Interview (+12.8%)
3y 7m (~7m remaining)
Median Time to Grant
High
PTA Risk
Based on 907 resolved cases by this examiner. Grant probability derived from career allowance rate.

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