Prosecution Insights
Last updated: July 17, 2026
Application No. 18/277,308

LEAD-FREE PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD FOR MANUFACTURING LEAD-FREE PIEZOELECTRIC CERAMIC

Non-Final OA §103
Filed
Aug 15, 2023
Priority
Feb 15, 2022 — nonprovisional of PCT/KR2022/002209 +1 more
Examiner
NASSIRI MOTLAGH, ANITA
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Iucf-hyu (industry-university Cooperation Foundation Hanyang University)
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
2m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
346 granted / 627 resolved
-9.8% vs TC avg
Strong +26% interview lift
Without
With
+25.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
18 currently pending
Career history
650
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
85.5%
+45.5% vs TC avg
§102
5.0%
-35.0% vs TC avg
§112
6.0%
-34.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 627 resolved cases

Office Action

§103
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 . This action is in response to Applicant’s response to election/restriction filed 05/12/2026. Applicant’s election without traverse of Group I, claims 1-5 in the reply filed on 05/12/2026 is acknowledged. Claims 6-8 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim.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 05/12/2026. Claims 1-8 are pending. Claims 1-5 are being examined. Claims 6-8 are withdrawn from further consideration as being directed to a non-elected invention. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-5 are rejected under 35 U.S.C. 103 as being unpatentable over IUCF HYU (KR 20200037483 A). Considering claims 1-3, IUCF HYU teaches a lead-free piezoelectric ceramic composition and method of manufacturing the composition comprising BCTZ-based base material, copper oxide, wherein a weight ratio of the copper oxide is 0.2-0.4 wt% and is sintered at a temperature of 1300-1450°C for 4 hours (IUCF HYU, abstract, page 3 of English translation). IUCF HYU teaches the piezoelectric properties of the lead-free piezoelectric ceramic are result effective relative to the sintering temperature and the amount of copper oxide (IUCF HYU, Table 1 and Table 2); therefore, it would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to vary the sintering temperature and hours of sintering to within the claimed ranges and the amount of copper oxide including to within the claimed 0.6 wt% in order to achieve desired piezoelectric properties for the lead-free piezoelectric ceramic with a reasonable expectation of success. Considering claim 4, IUCF HYU teaches the BCTZ-based material included the claimed formula (IUCF HYU, claim 3). Considering claim 5, the claims are directed to a method of preparing a lead-free piezoelectric ceramic; IUCF HYU teaches/obviates the claimed method of preparing a lead-free piezoelectric ceramic. Thus, the prepared lead-free piezoelectric ceramic of IUCF HYU would also be capable of being used for a speaker. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANITA NASSIRI-MOTLAGH whose telephone number is (571)270-7588. The examiner can normally be reached M-F 6:30-3:00. 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, Jonathan Johnson can be reached at 571-272-1177. 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. /ANITA NASSIRI-MOTLAGH/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Aug 15, 2023
Application Filed
Jun 18, 2026
Non-Final Rejection mailed — §103 (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
55%
Grant Probability
81%
With Interview (+25.5%)
3y 1m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 627 resolved cases by this examiner. Grant probability derived from career allowance rate.

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