Are there any other methods to remove or limit the effect of any of the intellectual property rights described in questions 1-3, for example, declaratory relief or licences of right?
Save for plant varieties and trade secrets/know-how, declaratory relief can be obtained.
For registered designs and patents, a person can also apply to the High Court for a compulsory licence to remedy an anti-competitive practice.
Specific to patents, a patent proprietor can apply to the registrar of patents for an entry to be made in the register to the effect that licenses under the patent are to be available as of right.
Specific to plant varieties, a person can also apply to the High Court for the grant of a compulsory license to exploit a protected variety in Singapore.