Efficient, English-language and predictable. Frequently the anchor filing for an international registration covering the rest of the region.
No utility model system — it is a full patent or nothing. Singapore's examination can rely on foreign search results, which shortens the road if you already have a granted patent elsewhere.
If you are filing across several ASEAN markets, the route through Singapore often costs less than a stack of national filings.
Unregistered rights get some protection. Proving them is slow and expensive compared with producing a certificate.
Worth doing where goods transit the port, which for this region is often.
Broad claims invite objections and later non-use exposure.