Patent Expiry Calendar: Brand Drugs Going Generic in 2026-2027

Why Patent Expiry Matters to You

When a brand-name drug's patent expires, generic manufacturers can begin producing and selling equivalent versions. This typically causes the drug's price to drop by 50% to 85% within the first two years of generic competition. For Canadians paying out of pocket or facing insurance gaps, these patent expiries represent real savings opportunities.

How Drug Patents Work in Canada

In Canada, drug patents typically last 20 years from the filing date. However, because patents are often filed years before a drug reaches the market, the actual period of market exclusivity is usually 8 to 12 years after the drug becomes available to patients.

Additionally, brand-name manufacturers sometimes receive data protection that prevents generic competition for 8 years after the brand's initial approval in Canada, regardless of patent status.

Major Patent Expiries in 2026

Eliquis and Xarelto: The Big Ones

These two blood thinners are among the most prescribed drugs in Canada. Together, they account for billions in annual drug spending. Generic versions could save individual patients $1,500 to $2,500 per year.

Important note: Patent litigation may delay generic entry. Brand-name manufacturers often file additional patents and legal challenges that can push generic availability back by months or even years.

Major Patent Expiries in 2027

Keytruda: A Game-Changer for Cancer Patients

Keytruda is the world's best-selling drug, used in multiple types of cancer. At over $100,000 per year, a biosimilar version could dramatically reduce costs for cancer treatment in Canada.

Expected Price Drops

Based on historical patterns when major drugs go generic in Canada:

Competition is the key driver. The more generic manufacturers that enter the market, the faster and further prices fall.

What This Means for Canadians

If You Currently Take One of These Drugs

Do not stop your medication — continue taking it as prescribed

Ask your pharmacist about generic availability as the patent expiry date approaches

Check TransparentMedz regularly for updated pricing as generics become available

Talk to your doctor about switching when a generic is approved by Health Canada

If You Have Insurance

Your insurance plan will likely switch to covering the generic version once it becomes available. This means lower co-pays for you and lower costs for your plan.

If You Pay Out of Pocket

Patent expiries are the best news you can get. A drug that costs you $300 per month today could drop to $60 to $100 per month once generic competition begins.

Tracking Generic Availability

Generic drugs do not appear overnight when a patent expires. The typical timeline after patent expiry is:

Generic manufacturers submit applications to Health Canada (often filed before patent expiry)

Health Canada reviews the ANDS submission (6 to 18 months)

Provincial formulary listing (varies by province, can add months)

Pharmacy stocking and availability

Use TransparentMedz to track when generics become available and compare prices across pharmacies. We update our database as new generics enter the Canadian market, so you will always see the latest options.

The Bigger Picture

The 2026-2027 patent expiry wave represents one of the largest shifts in Canadian drug pricing in years. Billions of dollars in brand-name drug spending will be converted to generic pricing, benefiting patients, insurers, and public drug plans alike.