Prosecution Insights
Last updated: April 19, 2026
Application No. 18/271,267

SIPE BLADE AND TIRE MOLD

Final Rejection §102§103
Filed
Jul 07, 2023
Examiner
BOOTH, ALEXANDER D
Art Unit
1749
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Bridgestone Corporation
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
2y 9m
To Grant
90%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
101 granted / 183 resolved
-9.8% vs TC avg
Strong +35% interview lift
Without
With
+35.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
36 currently pending
Career history
219
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
57.1%
+17.1% vs TC avg
§102
18.3%
-21.7% vs TC avg
§112
21.4%
-18.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 183 resolved cases

Office Action

§102 §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 Objections Claims 10 and 11 are objected to because of the following informalities: Claim 10: blade is provided with [[a]] the accommodation groove which is communicated… Claim 11: blade is provided with [[a]] the accommodation groove which is communicated… Appropriate correction is required. Claim Rejections - 35 USC § 102 The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim(s) 6, 7, 11 and 12 are rejected under 35 U.S.C. 102(a)(1)/(a)(2) as being anticipated by Ishihara ‘925 (JP2000102925A) (machine translation) (of record). Regarding claim 6, Ishihara ‘925 discloses a sipe blade (“bone” (2)) which is implanted in a base mold (“tire mold” (3)) and which molds a sipe in a tire, comprising: a first blade (“bone piece” (21)) molded by pressing a plate member, the first blade including a first molding surface and a second molding surface opposite the first molding surface (Fig 6, 7); and a second blade (“bone pieces” (22, 23)) having a thickness greater than a thickness of the first blade (Fig 6, 7, [0012]), wherein the second blade comprises: a contact portion which extends along an outer periphery of the first blade implanted in the base mold (Fig 6, 7) and with which the first molding surface of the first blade comes in contact along a peripheral edge portion of the first blade (Fig 6, 7), or a fitting portion which accommodates the peripheral edge portion of the first blade and with which the first molding surfaces and the second molding surface come in contact (Fig 6, 7, [0014]); and a vent passage along an accommodation groove (“vent hole” (5)), wherein the peripheral edge portion extends in a width direction on a side opposite to a surface to be embedded into the base mold (Fig 6, 7, in regards to the top of “bone” (2)), and the peripheral edge portion and a portion of the second blade that extends vertically from the peripheral edge portion to the surface to be embedded have a combined thickness greater than that of other portions of the sipe blades (Fig 6, 7). Examiner notes that the limitation of “a first blade molded by pressing a plate member” is considered a product by process limitation that does not further limit the structure of the claimed invention (See MPEP 2113). Furthermore, examiner notes the newly amended limitation “a vent passage along an accommodation groove” is not currently further defined by other portions of claim 6, including “a fitting portion which accommodates the peripheral edge portion…” as said “fitting portion” is disclosed as an alternative to “a contact portion” meaning said “vent passage along an accommodation groove” is present whether the sipe blade comprises “a contact portion” or “a fitting portion”. Regarding claim 7, Ishihara ‘925 discloses all limitations of claim 6 as set forth above. Additionally, Ishihara ‘925 discloses that a part of the second blade is included in a part of a molded item to be molded in the tire by the base mold (Fig 6, 7). Regarding claim 12, Ishihara ‘925 discloses a tire mold (“tire mold” (3)) comprises the sipe blade with the limitations as set forth above in claim 6. Regarding claim 13, Ishihara ‘925 discloses a tire mold (“tire mold” (3)) comprises the sipe blade with the limitations as set forth above in claim 7. Claim Rejections - 35 USC § 103 Claim(s) 6, 7, 12 and 13 are rejected under 35 U.S.C. 103 as being unpatentable over Hennessey (GB1379592) (of record) in view of Lutz et al. (EP3415343A1) and Takahashi (JP2000211320A) (machine translation). Regarding claim 6, Hennessey discloses a sipe blade which is implanted in a base mold (“mould” (1)) and which molds a sipe in a tire, comprising: a first blade (“knife blade” (2)) molded by pressing a plate member, the first blade including a first molding surface and a second molding surface opposite the first molding surface (Fig 2, left and right sides of “knife blade” (2)); and a second blade (“roll-pins” (3, 4)) having a thickness greater than a thickness of the first blade (Fig 2,3), wherein the second blade comprises: a contact portion which extends along an outer periphery of the first blade implanted in the base mold (Fig 2, 3) and with which the first molding surface comes in contact along a peripheral edge portion of the first blade (Fig 2), a vent passage along an accommodation groove (Fig 2, 3, with regards to the gap in “roll-pins” (3, 4)), wherein the peripheral edge portion extends in a width direction on a side opposite to a surface to be embedded into the base mold (Fig 1, right side of “knife blade” (2)), and a portion of the second blade that extends vertically from the peripheral edge portion to the surface to be embedded has a thickness greater than that of the portions of the sipe blade (Fig 2). While Hennessey discloses a fitting portion which accommodates part of the peripheral edge portion of the first blade and with which both the first molding surface and the second molding surface come in contact (Fig 2, 3), Hennessey does not explicitly disclose that instead of a contact portion, the second blade comprises a fitting portion which accommodates the peripheral edge portion of the first blade (interpreted by the examiner as in its entirety as in Fig 4A-C of applicant’s original disclosure) and with which both the first molding surface and the second molding surface come in contact and that the peripheral edge portion along with the portion of the second blade that extends vertically from the peripheral edge portion to the surface to be embedded have a combined thickness greater than that of other portions of the sipe blade. However, it would have been obvious to one of ordinary skill in the art prior to the earliest effective priority date of the instant application date to do so, given that: a) Lutz, which is within the tire sipe art, teaches that the use of sipes with wider profiles along their radially inner-most part (which, when molding, would correspond to the peripheral edge of a sipe blade) is known in the prior art forth the benefit of a tire’s wet performance ([0004]-[0007]); b1) Takahashi, which is within the tire sipe art, similarly teaches the use of sipes with wider profiles along their radially inner-most part for improved tire wet performance ([0002]-[0004]) and that a method of creating this wider profile comes in the form of using a sipe blade that, in addition to a first blade (“rectangular plate/s (42, 44)), comprises a second blade (“cylindrical body” (46)) that itself comprises a fitting portion which accommodates a peripheral edge portion of the first blade that extends in a width direction on a side opposite to a surface to be embedded into the base mold (Fig 1, 2 and 4) and with which both a first and second molding surface would come into contact with (Fig 4) and an accommodation groove (“groove” (50)); and b2) given that both Takahashi and Hennessey teach second blades that accommodate an outer periphery of a first blade and have accommodation grooves, it would be well within a person of ordinary skill in the art’s ability to modify Takahashi’s “groove” (50) so as to have a vent passage similar to that of Hennessey for the predictable result of requiring less material be used to construct Takahashi’s “cylindrical body” (46)). Examiner notes that the limitation of “a first blade molded by pressing a plate member” is considered a product by process limitation that does not further limit the structure of the claimed invention (See MPEP 2113). Furthermore, examiner notes the newly amended limitation “a vent passage along an accommodation groove” is not currently further defined by other portions of claim 6, including “a fitting portion which accommodates the peripheral edge portion…” as said “fitting portion” is disclosed as an alternative to “a contact portion” meaning said “vent passage along an accommodation groove” is present whether the sipe blade comprises “a contact portion” or “a fitting portion”. Regarding claim 7, modified Hennessey teaches all limitations of claim 6 as set forth above. Additionally, Hennessey teaches that a part of the second blade is included in a part of a molded item to be molded in the tire by the base mold (Fig 1, 2). Regarding claim 12, Hennessey discloses a tire mold (“mould” (1)) comprises the sipe blade with the limitations as set forth above in claim 6. Regarding claim 13, Hennessey discloses a tire mold (“mould” (1)) comprises the sipe blade with the limitations as set forth above in claim 7. Claim(s) 8-11 and 14-17 are rejected under 35 U.S.C. 103 as being unpatentable over Hennessey (GB1379592), Lutz et al. (EP3415343A1) and Takahashi (JP2000211320A) (machine translation) in further view of Ishihara ‘111 (US20180319111) (of record). Regarding claim 8, modified Hennessey teaches all limitations of claim 6 as set forth above. Additionally, Hennessey teaches that the sipe blade comprises a gap, which is generated in the contact portion where the first blade and the second blade come in contact or which is generated in the fitting portion (Fig 1-3). While modified Hennessey does not explicitly disclose that the gap is communicated with a vent hole provided in the base mold, it would have been obvious to one of ordinary skill in the art prior to the earliest effective priority date of the instant application to do so, given that Ishihara ‘111, which is within the tire molding art, teaches that a sipe blade (“sipe blade” (26)) used for tire molding is attached to a base mold (“vulcanizing mold” (25)) in which a gap in the sipe blade (“distal end path” (47)) is in communication with a vent in the tire mold (“discharge path” (40), [[0030]) for the predictable result of venting gas during tire vulcanization while allowing for easy clog elimination ([0030]). Regarding claim 9, modified Hennessey teaches all limitations of claim 7 as set forth above. Additionally, Hennessey teaches that the sipe blade comprises a gap, which is generated in the contact portion where the first blade and the second blade come in contact or which is generated in the fitting portion (Fig 1-3). While Hennessey does not explicitly disclose that the gap is communicated with a vent hole provided in the base mold, it would have been obvious to one of ordinary skill in the art prior to the earliest effective priority date of the instant application to do so, given that Ishihara ‘111, which is within the tire molding art, teaches that a sipe blade (“sipe blade” (26)) used for tire molding is attached to a base mold (“vulcanizing mold” (25)) in which a gap in the sipe blade (“distal end path” (47)) is in communication with a vent in the tire mold (“discharge path” (40), [[0030]) for the predictable result of venting gas during tire vulcanization while allowing for easy clog elimination ([0030]). Regarding claim 10, modified Hennessey teaches all limitations of claim 8 as set forth above. Additionally, modified Hennessey teaches that the second blade is provided with a groove (Fig 2, 3), which is communicated with the vent hole and extends along the contact portion where the first blade and the second blade come in contact or along the fitting portion (Fig 2, 3). Regarding claim 11, modified Hennessey teaches all limitations of claim 9 as set forth above. Additionally, modified Hennessey teaches that the second blade is provided with a groove (Fig 2, 3), which is communicated with the vent hole and extends along the contact portion where the first blade and the second blade come in contact or along the fitting portion (Fig 2, 3). Regarding claim 14, modified Hennessey teaches a tire mold (“mould” (1)) comprises the sipe blade with the limitations as set forth above in claim 8. Regarding claim 15, modified Hennessey teaches a tire mold (“mould” (1)) comprises the sipe blade with the limitations as set forth above in claim 9. Regarding claim 16, modified Hennessey teaches a tire mold (“mould” (1)) comprises the sipe blade with the limitations as set forth above in claim 10. Regarding claim 17, modified Hennessey teaches a tire mold (“mould” (1)) comprises the sipe blade with the limitations as set forth above in claim 11. Claim(s) 8-11 and 14-17 are rejected under 35 U.S.C. 103 as being unpatentable over Ishihara ‘925 (JP2000102925A) (machine translation) (of record) in view of Ishihara ‘111 (US20180319111) (of record). Regarding claim 8, Ishihara ‘925 discloses all limitations of claim 6 as set forth above. While Ishihara ‘925 does disclose the gap (“vent hole” (5)) which is generated in the contact portion where the first blade and the second blade come in contact (Fig 6, 7, in that “vent holes” (5) are not in the center of “bone” (2) and considered as part of the claimed “outer periphery”), Ishihara ‘925 does not disclose that the gap is communicated with a vent hole provided in the base mold. However, it would have been obvious to one of ordinary skill in the art prior to the earliest effective priority date of the instant application to do so, given that Ishihara ‘111, which is within the tire molding art, teaches that a sipe blade (“sipe blade” (26)) used for tire molding is attached to a base mold (“vulcanizing mold” (25)) in which a gap in the sipe blade (“distal end path” (47)) is in communication with a vent in the tire mold (“discharge path” (40), [[0030]) for the predictable result of venting gas during tire vulcanization while allowing for easy clog elimination ([0030]). Regarding claim 9, Ishihara ‘925 discloses all limitations of claim 7 as set forth above. While Ishihara ‘925 does disclose the gap (“vent hole” (5)) which is generated in the contact portion where the first blade and the second blade come in contact (Fig 6, 7, in that “vent holes” (5) are not in the center of “bone” (2) and considered as part of the claimed “outer periphery”), Ishihara ‘925 does not disclose that the gap is communicated with a vent hole provided in the base mold. However, it would have been obvious to one of ordinary skill in the art prior to the earliest effective priority date of the instant application to do so, given that Ishihara ‘111, which is within the tire molding art, teaches that a sipe blade (“sipe blade” (26)) used for tire molding is attached to a base mold (“vulcanizing mold” (25)) in which a gap in the sipe blade (“distal end path” (47)) is in communication with a vent in the tire mold (“discharge path” (40), [[0030]) for the predictable result of venting gas during tire vulcanization while allowing for easy clog elimination ([0030]). Regarding claim 10, modified Ishihara ‘925 teaches all limitations of claim 8 as set forth above. Additionally, modified Ishihara ‘925 teaches that the second blade is provided with the accommodation groove (Fig 6, 7), which is communicated with the vent hole and extends along the contact portion where the first blade and the second blade come in contact or along the fitting portion (Fig 6, 7). Regarding claim 11, modified Ishihara ‘925 teaches all limitations of claim 9 as set forth above. Additionally, modified Ishihara ‘925 teaches that the second blade is provided with the accommodation groove (Fig 6, 7), which is communicated with the vent hole and extends along the contact portion where the first blade and the second blade come in contact or along the fitting portion (Fig 6, 7). Regarding claim 14, modified Ishihara ‘925 teaches a tire mold (“tire mold” (3)) comprises the sipe blade with the limitations as set forth above in claim 8. Regarding claim 15, modified Ishihara ‘925 teaches a tire mold (“tire mold” (3)) comprises the sipe blade with the limitations as set forth above in claim 9. Regarding claim 16, modified Ishihara ‘925 teaches a tire mold (“tire mold” (3)) comprises the sipe blade with the limitations as set forth above in claim 10. Regarding claim 17, modified Ishihara ‘925 teaches a tire mold (“tire mold” (3)) comprises the sipe blade with the limitations as set forth above in claim 11. Response to Arguments Applicant’s arguments with respect to claim(s) 6 in view of Hennessey 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. Applicant's arguments filed 6 October 2025 on p.2 have been fully considered but they are not persuasive. In applicant’s remarks on p.2, applicant argues that Ishihara ’925 does not disclose the vent passage of claim 6. Examiner disagrees, noting that given the broadest reasonable interpretation of claim 6 where both “a vent passage” and “an accommodation groove” are not further defined in said claim nor explicitly associated with other limitations in the claim, for example “a fitting portion which accommodates the peripheral edge portion of the first blade and with which both the first molding surface and the second molding surface come in contact” which is given as an alternative to “a contact portion which extends along an outer periphery of the first blade implanted in the base mold and with which the first molding surface comes in contact along a peripheral edge portion of the first blade”, Ishihara ‘925’s “vent holes” (5) as set forth in the rejection above is considered to disclose the claimed limitation. 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 ALEXANDER D BOOTH whose telephone number is 571-272-6704. The examiner can normally be reached M-Th 7:00-4:30. 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, Katelyn Smith can be reached at 571-270-5545. 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. /ALEXANDER D BOOTH/Examiner, Art Unit 1749 /John J DeRusso/Primary Examiner, Art Unit 1744
Read full office action

Prosecution Timeline

Jul 07, 2023
Application Filed
Jul 03, 2025
Non-Final Rejection — §102, §103
Oct 06, 2025
Response Filed
Dec 22, 2025
Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12589567
GREEN TIRE MANUFACTURING METHOD AND GREEN TIRE MANUFACTURING APPARATUS
2y 5m to grant Granted Mar 31, 2026
Patent 12552122
METHOD FOR PRODUCING COMPOSITE BLADE CLEATS FOR AN AIRCRAFT TURBINE ENGINE
2y 5m to grant Granted Feb 17, 2026
Patent 12515426
PROCESS AND APPARATUS FOR LABELLING A GREEN TYRE FOR BICYCLES
2y 5m to grant Granted Jan 06, 2026
Patent 12447705
METHOD AND APPARATUS FOR CONTROLLING THE FEED OF SEMIFINISHED PRODUCTS IN A TYRE BUILDING PROCESS
2y 5m to grant Granted Oct 21, 2025
Patent 12441071
PROCESS AND PLANT FOR PRODUCING TYRES FOR VEHICLE WHEELS
2y 5m to grant Granted Oct 14, 2025
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

3-4
Expected OA Rounds
55%
Grant Probability
90%
With Interview (+35.3%)
2y 9m
Median Time to Grant
Moderate
PTA Risk
Based on 183 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