T 0538/02 (Silanized titanium dioxide/DUPONT) of 08.08.2007
- European Case Law Identifier
- ECLI:EP:BA:2007:T053802.20070808
- Date of decision
- 8 August 2007
- Case number
- T 0538/02
- Online on
- 19 October 2007
- Petition for review of
- -
- Application number
- 95912062.7
- IPC class
- C09C 1/36
- Language of proceedings
- English
- Distribution
- Distributed to board chairmen (C)
- Download
- Decision in English
- OJ versions
- No OJ links found
- Other decisions for this case
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- Abstracts for this decision
- -
- Application title
- Improved processibility and lacing resistance when silanized pigments are incorporated in polymers
- Applicant name
- E.I. DU PONT DE NEMOURS AND COMPANY
- Opponent name
- KRONOS INTERNATIONAL, INC.
- Board
- 3.3.06
- Headnote
- -
- Relevant legal provisions
- European Patent Convention Art 56 1973
- Keywords
- Inventive step (main request; auxiliary requests 1 to 3): no - hint in the prior art to improve dispersibility
Inventive step (auxiliary request 4): yes - adding silanes to polydimethylsiloxane for silanizing titanium dioxide not derivable form prior art; effect proven - Catchword
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- Cited cases
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- Citing cases
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ORDER
For these reasons it is decided that:
1. The decision under appeal is set aside.
2. The case is remitted to the department of first instance with the order to maintain the patent on the basis of the claims 1 to 13 according to the fourth auxiliary request submitted during oral proceedings before the Board and the description to be adapted.