Oligopoly and collusion
What is an “agreement”?
Civil vs criminal enforcement
Green growth and beneficial coordination/cooperation
Major paper proposals
What’s the difference between a group of grocers who make an agreement to fix the price of bread and a group of lawyers who create a law firm to set and publish a fee schedule for their services?
Four firms dominate a market. Monthly pricing data show that the firms’ pricing decisions are correlated with one another (i.e. they move up/down together).
Does this indicate a problem that competition law should address?


Market in which a small number of firms are expected to take into account the pricing behaviour of their rivals as they compete to maximize profits.


Explain in your own words how the PD game can be used to model oligopolistic competition and cartel behaviour. What insights does it yield?
(a) to fix, maintain, increase or control the price for the supply of the product;
(b) to allocate sales, territories, customers or markets for the production or supply of the product; or
(c) to fix, maintain, control, prevent, lessen or eliminate the production or supply of the product.
There are only three sellers in a given industry. One day, one of the firms sends the following email to its two competitors: “In the interest of fair competition, and for the sake of market transparency, we hereby inform you that the Board of our company has decided that from the next quarter our sales price will be 5% higher.”
Do you think competition law should allow or forbid sending such e-mails. Why?
In a prosecution under subsection (1) or (1.1), the court may infer the existence of a conspiracy, agreement or arrangement from circumstantial evidence, with or without direct evidence of communication between or among the alleged parties to it, but, for greater certainty, the conspiracy, agreement or arrangement must be proved beyond a reasonable doubt.
What other factors (circumstantial evidence) might the Bureau draw on to prove an “agreement”? Does game theory help us here?
Worries?
algorithms that monitor competitors’ prices
algorithms that recommend or automatically set a price based on competitors’ prices
algorithms that tailor prices to specific individuals (personalized pricing)

(a) to fix, maintain, increase or control the price for the supply of the product;
(b) to allocate sales, territories, customers or markets for the production or supply of the product; or
(c) to fix, maintain, control, prevent, lessen or eliminate the production or supply of the product.
90.1 (1) If, on application by the Commissioner, the Tribunal finds that an agreement or arrangement — whether existing or proposed — between persons two or more of whom are competitors prevents or lessens, or is likely to prevent or lessen, competition substantially in a market, the Tribunal may make an order […]

“Per se” vs “rule of reason” analysis.
What role fo competition law?
Greenwashing provisions
Advanced certificate for sustainability agreements
Amendments to purpose clause?
Proposed section 45 defence
TFEU Article 101
Competition Act, ss 124.3 - 124.6 (advance certificates)
124.3 (1) If the Commissioner is satisfied by a party or parties that propose to enter into an agreement or arrangement that it is for the purpose of protecting the environment and that it is not likely to prevent or lessen competition substantially in a market, they may issue a certificate that they are so satisfied.
Defence
45(4.1) No person shall be convicted of an offence under subsection (1) in respect of a conspiracy, agreement or arrangement that would otherwise contravene that subsection if that person establishes on a balance of probabilities that it is directly related to the objective of environmental protection or sustainability.
which contributes to improving the production or distribution of goods or to promoting technical or economic progress, while allowing consumers a fair share of the resulting benefit, and which does not:
(a) impose on the undertakings concerned restrictions which are not indispensable to the attainment of these objectives;
(b) afford such undertakings the possibility of eliminating competition in respect of a substantial part of the products in question.
(1) provisional title, (2) abstract (200 words), (3) preliminary table of contents and (4) provisional bibliography by 12PM on Monday, February 2, 2026 via Brightspace.