Prosecution Insights
Last updated: April 19, 2026
Application No. 18/119,895

Optical Glasses Containing Bismuth Oxide

Non-Final OA §103
Filed
Mar 10, 2023
Examiner
AUER, LAURA A
Art Unit
1783
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Corning Incorporated
OA Round
1 (Non-Final)
49%
Grant Probability
Moderate
1-2
OA Rounds
3y 11m
To Grant
83%
With Interview

Examiner Intelligence

Grants 49% of resolved cases
49%
Career Allow Rate
227 granted / 466 resolved
-16.3% vs TC avg
Strong +34% interview lift
Without
With
+34.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
46 currently pending
Career history
512
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
54.8%
+14.8% vs TC avg
§102
16.5%
-23.5% vs TC avg
§112
20.9%
-19.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 466 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 . 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 1-4, 6-11, 13-18 and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Mikami et al. (US 2016/0214881). Regarding claim 1, Mikami discloses an optical glass with the following composition (note the content M is the content [%] of P2O5) in mol % [0137]: The content of P2O5 ranges from 7 to 40% [0143]; The content of B2O3 is 0% or more and is less than M [%] [0145]; The content of SiO2 is 0% to 0.8×M [%] [0144]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; The content of Bi2O3 preferably ranges from 0 to 35% [0150]; The content of F is preferably in the range of 0 to 3% [0164]; The content of TiO2 is from 0 to 40% [0147]; The content of Nb2O5 is from 0 to 45% [0148]; The total content of Li2O, Na2O and K2O is preferably in the range of 0 to 40% [0154]; and The total content of BaO, SrO, CaO, MgO and ZnO is preferably in the range of 0 to 40% [0152]. Note that the disclosed ranges overlap the claimed ranges and that a prima facie case of obviousness exists where the claimed ranges “overlap or lie inside ranges disclosed by the prior art”; see MPEP 2144.05 I. Based on the values disclosed for P2O5 and the percentages of P2O5 disclosed for B2O3 and SiO2, the reference renders obvious the claimed ranges for B2O3 and SiO2. Further, based on the values of P2O5, B2O3 and SiO2, the reference renders obvious the claimed sum of the three components [0143-0145]. Similarly, based on the values of TiO2 and Nb2O5, the reference renders obvious the claimed sum of the two components [0147-0148]. Lastly, based on the total content of the divalent metal compounds (BaO, SrO, CaO, MgO and ZnO) and the alkali metal oxides (Li2O, Na2O and K2O), the reference renders obvious the claimed sum of R2O + RO [0152 & 0154]. Regarding claim 2, the reference further discloses the glass composition includes, in terms of mol % [0137]: The content of ZrO.sub.2 is preferably in the range of 0 to 16% [0156]; The content of B2O3 is 0% or more and is less than M [%] where M is the content [%] of P2O5 and P2O5 ranges from 7 to 40% [0143 & 0145]; The content of TiO2 is from 0 to 40% [0147]; The content of WO3 preferably ranges from 0 to 30% [0149]; The content of La2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of Nb2O5 is from 0 to 45% [0148]; The content of SiO2 is 0% to 0.8×M [%] where M is the content [%] of P2O5 and P2O5 ranges from 7 to 40% [0143-0144]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; The content of F is preferably in the range of 0 to 3% [0164]; The content of Yb2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; and The content of Gd2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]. Note that the disclosed ranges overlap the claimed ranges and that a prima facie case of obviousness exists where the claimed ranges “overlap or lie inside ranges disclosed by the prior art”; see MPEP 2144.05 I. Based on the values disclosed for P2O5 and the percentages of P2O5 disclosed for B2O3 and SiO2, the reference renders obvious the claimed ranges for B2O3 and SiO2. Further, based on the values of P2O5, B2O3 and SiO2, the reference renders obvious the claimed equation of the three components [0143-0145]. Similarly, based on the values of Yb2O3 and Gd2O3, the reference renders obvious the claimed sum of the two components [0163]. Lastly, the reference discloses the refractive index of the optical glass is preferably 1.90 or more, which overlaps the claimed [0280]; see MPEP 2144.05 I. Regarding claim 3, the reference discloses the glass composition includes, in terms of mol % [0137]: The content of Bi2O3 preferably ranges from 0 to 35% [0150]; and The content of WO3 preferably ranges from 0 to 30% [0149]. Based on the values of WO3 and Bi2O3, the reference renders obvious the claimed sum of the two components [0147-0148]. Regarding claim 4, the reference discloses the glass composition includes, in terms of mol % [0137]: The content of Ta2O5 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of TeO2 is preferably in the range of 0 to 10% [0159]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; Pb and As are not substantially contained [0165]; The content of Sb2O3 is 0 ppm or more and less than 1000 ppm [0160]; F is not substantially contained or zero [0164 & 0168]; and V is not substantially contained [0166 & 0168]. Regarding claims 6 and 7, based on the ranges disclosed for the components of the glass composition, the reference renders obvious at least Applicant’s example 63, see above discussion, Mikami [0136-0168]. As such, the reference is considered to render obvious a composition with the claimed Pd and Pn values as well as one that does not crystallize during the claimed test; see MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 8, based on the ranges disclosed for the components of the glass composition, the reference renders obvious the claimed ranges, conditions and at least Applicant’s example 63, see above discussion, Mikami [0136-0168]. As such, the reference is considered to render obvious the claimed composition and the claimed Pn value; see MPEP 2144.05 I regarding overlapping ranges and MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 9, the reference discloses the refractive index of the optical glass is preferably 1.90 or more, which overlaps the claimed [0280]; see MPEP 2144.05 I. Additionally, the reference renders obvious at least Applicant’s example 63, see above discussion, Mikami [0136-0168]. As such, the reference is considered to render obvious the claimed refractive index value; see MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 10, the reference further discloses the glass composition includes, in terms of mol % [0137]: The content of ZrO.sub.2 is preferably in the range of 0 to 16% [0156]; The content of B2O3 is 0% or more and is less than M [%] where M is the content [%] of P2O5 and P2O5 ranges from 7 to 40% [0143 & 0145]; The content of TiO2 is from 0 to 40% [0147]; The content of WO3 preferably ranges from 0 to 30% [0149]; The content of La2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of Nb2O5 is from 0 to 45% [0148]; The content of SiO2 is 0% to 0.8×M [%] where M is the content [%] of P2O5 and P2O5 ranges from 7 to 40% [0143-0144]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; The content of F is preferably in the range of 0 to 3% [0164]; The content of Yb2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; and The content of Gd2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]. Note that the disclosed ranges overlap the claimed ranges and that a prima facie case of obviousness exists where the claimed ranges “overlap or lie inside ranges disclosed by the prior art”; see MPEP 2144.05 I. Based on the values disclosed for P2O5 and the percentages of P2O5 disclosed for B2O3 and SiO2, the reference renders obvious the claimed ranges for B2O3 and SiO2. Further, based on the values of P2O5, B2O3 and SiO2, the reference renders obvious the claimed equation of the three components [0143-0145]. Similarly, based on the values of Yb2O3 and Gd2O3, the reference renders obvious the claimed sum of the two components [0163]. Regarding claim 11, the reference discloses the glass composition includes, in terms of mol % [0137]: The content of Ta2O5 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of TeO2 is preferably in the range of 0 to 10% [0159]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; Pb and As are not substantially contained [0165]; The content of Sb2O3 is 0 ppm or more and less than 1000 ppm [0160]; F is not substantially contained or zero [0164 & 0168]; and V is not substantially contained [0166 & 0168]. Regarding claims 13 and 14, based on the ranges disclosed for the components of the glass composition, the reference renders obvious at least Applicant’s example 63, see above discussion, Mikami [0136-0168]. As such, the reference is considered to render obvious a composition with the claimed Pd and Pn values as well as one that does not crystallize during the claimed test; see MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 15, Mikami discloses an optical glass with the following composition (note the content M is the content [%] of P2O5) in mol % [0137]: The content of P2O5 ranges from 7 to 40% [0143]; The content of B2O3 is 0% or more and is less than M [%] [0145]; The content of SiO2 is 0% to 0.8×M [%] [0144]; The content of WO3 preferably ranges from 0 to 30% [0149]; The content of La2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of TeO2 is preferably in the range of 0 to 10% [0159]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; The content of Bi2O3 preferably ranges from 0 to 35% [0150]; The content of F is preferably in the range of 0 to 3% [0164]; The content of TiO2 is from 0 to 40% [0147]; The content of Nb2O5 is from 0 to 45% [0148]; Pb is not substantially contained [0165]; The content of Ga2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The total content of Li2O, Na2O and K2O is preferably in the range of 0 to 40% [0154]; and The total content of BaO, SrO, CaO, MgO and ZnO is preferably in the range of 0 to 40% [0152]; and One or more of the claimed components [0136-0168]. Note that the disclosed ranges overlap the claimed ranges and that a prima facie case of obviousness exists where the claimed ranges “overlap or lie inside ranges disclosed by the prior art”; see MPEP 2144.05 I. Based on the values disclosed for P2O5 and the percentages of P2O5 disclosed for B2O3 and SiO2, the reference renders obvious the claimed ranges for B2O3 and SiO2. Additionally, based on the ranges disclosed for the components of the glass composition, the reference renders obvious at least Applicant’s example 63, see above discussion, Mikami [0136-0168]. As such, the reference is considered to render obvious a composition with the claimed Pd and Pn values as well as one that does not crystallize during the claimed test; see MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 16, it is expected that the disclosed composition renders obvious a glass with the claimed density and one that satisfies the claimed condition given the disclosed ranges overlap the claimed ranges and the reference renders obvious at least Applicant’s example 63; see above discussion, MPEP 2144.05 I and MPEP 2112.01 II. Regarding claim 17, the reference further discloses the glass composition includes, in terms of mol % [0137]: The content of ZrO.sub.2 is preferably in the range of 0 to 16% [0156]; The content of B2O3 is 0% or more and is less than M [%] where M is the content [%] of P2O5 and P2O5 ranges from 7 to 40% [0143 & 0145]; The content of TiO2 is from 0 to 40% [0147]; The content of WO3 preferably ranges from 0 to 30% [0149]; The content of La2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of Nb2O5 is from 0 to 45% [0148]; The content of SiO2 is 0% to 0.8×M [%] where M is the content [%] of P2O5 and P2O5 ranges from 7 to 40% [0143-0144]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; The content of F is preferably in the range of 0 to 3% [0164]; and The content of Yb2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of Gd2O3 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The total content of Li2O, Na2O and K2O is preferably in the range of 0 to 40% [0154]; and The total content of BaO, SrO, CaO, MgO and ZnO is preferably in the range of 0 to 40% [0152]. Note that the disclosed ranges overlap the claimed ranges and that a prima facie case of obviousness exists where the claimed ranges “overlap or lie inside ranges disclosed by the prior art”; see MPEP 2144.05 I. Based on the values disclosed for P2O5 and the percentages of P2O5 disclosed for B2O3 and SiO2, the reference renders obvious the claimed ranges for B2O3 and SiO2. Further, based on the values of P2O5, B2O3 and SiO2, the reference renders obvious the claimed equation of the three components [0143-0145]. Similarly, based on the values of Yb2O3 and Gd2O3, the reference renders obvious the claimed sum of the two components [0163]. Based on the total content of the divalent metal compounds (BaO, SrO, CaO, MgO and ZnO) and the alkali metal oxides (Li2O, Na2O and K2O), the reference renders obvious the claimed sum of R2O + RO [0152 & 0154]. Lastly, the reference discloses the refractive index of the optical glass is preferably 1.90 or more, which overlaps the claimed [0280]; see MPEP 2144.05 I. Regarding claim 18, the reference discloses the glass composition includes, in terms of mol % [0137]: The content of Ta2O5 is in the range of 0 to 10%, note the other components listed can be zero [0163]; The content of TeO2 is preferably in the range of 0 to 10% [0159]; The content of GeO2 is preferably in the range of 0 to 10% [0157]; Pb and As are not substantially contained [0165]; The content of Sb2O3 is 0 ppm or more and less than 1000 ppm [0160]; F is not substantially contained or zero [0164 & 0168]; and V is not substantially contained [0166 & 0168]. Regarding claim 20, based on the ranges disclosed for the components of the glass composition, the reference renders obvious at least Applicant’s example 63, see above discussion, Mikami [0136-0168]. As such, the reference is considered to render obvious a composition that does not crystallize during the claimed test; see MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Claims 1, 5, 8, 12, 15 and 19 are rejected under 35 U.S.C. 103 as being unpatentable over Zou et al. (US 2011/0028300). Regarding claim 1, Zou discloses an optical glass comprising, by mol %: 0.1 to 40% of SiO2, 10 to 50% of B2O3, 0 to 10% of total of Li2O, Na2O and K2O, 0 to 10% of total of MgO, CaO, SrO and BaO, 0.5 to 22% of ZnO, 5 to 50% of La2O3, 0.1 to 25% of Gd2O3, 0.1 to 20% of Y2O3, 0 to 20% of Yb2O3, 0 to 25% of ZrO2, 0 to 25% of TiO2, 0 to 20% of Nb2O5, 0 to 10% of Ta2O5, over 0.1% but not more than 20% of WO3, 0 to less than 3% of GeO2, 0 to 10% of Bi2O3, and 0 to 10% of Al2O3, see abstract. Note that the disclosed ranges overlap the claimed ranges and that a prima facie case of obviousness exists where the claimed ranges “overlap or lie inside ranges disclosed by the prior art”; see MPEP 2144.05 I. Based on the values of P2O5, B2O3 and SiO2, the reference renders obvious the claimed sum of the three components [0143-0145]. Similarly, based on the values of TiO2 and Nb2O5, the reference renders obvious the claimed sum of the two components [0147-0148]. Lastly, based on the total content of the divalent metal compounds (BaO, SrO, CaO, MgO and ZnO) and the alkali metal oxides (Li2O, Na2O and K2O), the reference renders obvious the claimed sum of R2O + RO [0152 & 0154]. Regarding claim 5, the ranges disclosed by Zou render obvious the claimed ranges, see abstract and above discussion; see also MPEP 2144.05 I. Regarding claim 8, based on the ranges disclosed for the components of the glass composition, the reference renders obvious the claimed ranges and conditions, see above discussion and Zou abstract. While the reference does not specifically disclose the claimed Pn value, given the reference renders obvious the claimed glass composition, it is expected to render obvious a composition with the claimed property; see MPEP 2144.05 I regarding overlapping ranges and MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 12, the ranges disclosed by Zou render obvious the claimed ranges, see abstract and above discussion; see also MPEP 2144.05 I. Regarding claim 15, based on the ranges disclosed for the components of the glass composition, the reference renders obvious the claimed ranges and conditions, see above discussion and Zou abstract. While the reference does not specifically disclose the claimed Pn and Pd values, given the reference renders obvious the claimed glass composition, it is expected to render obvious a composition with the claimed properties; see MPEP 2144.05 I regarding overlapping ranges and MPEP 2112.01 II “if the composition is physically the same, it must have the same properties.” Regarding claim 19, the ranges disclosed by Zou render obvious the claimed ranges, see abstract and above discussion; see also MPEP 2144.05 I. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAURA A AUER whose telephone number is (571)270-5669. The examiner can normally be reached Monday - Friday 9 am - 4 pm 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, M. Veronica Ewald can be reached at (571)272-8519. 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. /LAURA A AUER/Primary Examiner, Art Unit 1783
Read full office action

Prosecution Timeline

Mar 10, 2023
Application Filed
Jan 24, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600675
CERAMIC MATERIAL FOR THERMAL BARRIER COATING AND MANUFACTURING METHOD THEREOF
2y 5m to grant Granted Apr 14, 2026
Patent 12589935
HEAT-RESISTANT CONTAINER
2y 5m to grant Granted Mar 31, 2026
Patent 12580128
DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT
2y 5m to grant Granted Mar 17, 2026
Patent 12565026
FIRE RESISTANT VACUUM INSULATING GLAZING
2y 5m to grant Granted Mar 03, 2026
Patent 12566286
FILTER FOR GLASS CONTAINER
2y 5m to grant Granted Mar 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
49%
Grant Probability
83%
With Interview (+34.3%)
3y 11m
Median Time to Grant
Low
PTA Risk
Based on 466 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month