The Government of New Zealand is proposing a set of amendments to the national patent law, none of them mentions the exclusions of software from the field of patentability, thus making software patentable in New Zealand. The Government claims that Free Trade Agreements (notably the ones with the US and China) and other international treaties require software patents in New Zealand.
The Government won't specifically exclude software, but they do exclude mathematical algorithms:
The term "manner of manufacture" is carried over from the Patents Act 1953 and has been interpreted by the courts to exclude such things as "products of nature", mere discoveries, mathematical algorithms, mere schemes or plans, and methods of medical treatment of humans.
However, we are at stage 2 of the review of Patent Legislation. Stage 3 is yet to take place and it specifically mentions software:
To address the deficiencies of the Patents Act 1953, Cabinet, in August 2001, agreed to a 3-stage review of the Act. The proposals discussed in this regulatory impact statement are part of Stage 2 of this Review. Cabinet has previously agreed to proposals in Stage 1 (August 2001) and the first part of Stage 2 (September 2001). Contentious issues including Māori and other concerns regarding issues such as the patentability of biotechnological inventions, medical treatments, and computer software and business methods, will be dealt with in Stage 3 of the review. The criteria for granting a patent contained in the Patents Act 1953 are less stringent than the criteria now applied in most other developed countries, including New Zealand’s major trading partners. This means that patents granted in New Zealand provide a broader monopoly than would be provided for the same invention in other countries.
The Green party has already taken a position against software patents in New Zealand, but what is more important is to convince the right wing conservatives that software patents harms the local economy.