On October 8, 2020, the Institute of Amazonian Studies (Instituto de Estudos Amazônicos - IEA) filed a Public Civil Action (class action) against the Federal Government of Brazil, seeking recognition of a fundamental right to a stable climate for present and future generations under the Brazilian Constitution, and seeking an order to compel the federal government to comply with national climate law. Plaintiffs allege that the federal government has failed to comply with its own action plans to prevent deforestation and mitigate and adapt to climate change, violating national law and fundamental rights. Plaintiffs assert that the government has failed to meet the Brazilian emissions targets set out in the Climate Change National Policy Act, a binding act passed by the Brazilian legislature. In order to meet these targets, the federal government issued a decree setting out specific action plans for preventing and controlling deforestation in various Brazilian biomes, as well as outlining sectoral plans for climate change mitigation and adaptation. A key part of this decree is the Action Plan for Prevention and Control of Deforestation in Legal Amazon (PPCDAm). By failing to meet critical targets in the PPCDAm and emissions targets, plaintiffs allege that the government is violating fundamental rights and national law. Plaintiffs seek an order to compel the federal government to comply with its existing policies, to reforest an area equivalent to what was deforested beyond the statutory limit, and to allocate sufficient budgetary resources for this purpose.

In July 2021, the Federal District Court of Curitiba issued an order rejecting jurisdiction and transferring the case to the 7th Federal Environmental and Agrarian Court of the Judiciary Section of Amazonas, on account of the alleged connection between this case and another case in that court. The other case involves a dispute over whether the government adequately implemented measures to combat those who put the Amazon forest and its ecological hotspots under threat during the Covid-19 pandemic. The lower court found that both lawsuits aimed at combating illegal deforestation in the Amazon and both referred to the PPCDAm, thus presenting “sufficient similarity” or “close connection” between the issues discussed, thereby “giving rise to an undue risk of conflicting solutions.” IEA appealed the transfer decision to the federal appellate court (TRF4). 

On August 20, 2021, the TRF4 (through a decision from the reporting judge) suspended the lower court decision to transfer the case and returned the case to the Federal District Court of Curitiba. The Court found that this case and the ecological hotspots case "present quite different typology and structure, specialized instruments and distinct political-legal approaches, in addition to the fact that their object, cause of action and demands do not coincide." The Court found that this case has as its central objective to put pressure on the legislative and executive branches to ensure a stable climate. The ecological hotspots case, on the other hand, addresses matters related to environmental law, and does not have a central theme linked to Brazilian climate legislation. The decision also includes a lengthy discussion of the unique nature and importance of climate litigation. On December 7, 2021, the third chamber of the appellate court confirmed the decision. 

On March 29, 2022, the TRF4 issued a decision delimiting the powers of the amicus curiae, given their inability to appeal the decisions of the process. The judge considered the request for the National Institute for Space Research (INPE) to act as amicus curiae in the case to be unfounded, given that the entity did not show interest. Furthermore, the decision called for a conciliation hearing and judgment of the case to be scheduled within 30 days and for the parties, the Attorney General's Office and the Federal Public Ministry to be summoned regarding the date and time of the hearing. It is worth mentioning that the order also deals with the possibility of the parties being accompanied by technicians in order to clarify any points on the subject. Two days after the dispatch of the order, the parties were summoned and the hearing was scheduled for May 18, 2022 in the courtroom of the 11th Federal Court.

On July 22, 2022, the Federal Government filed its defense, pointing out that the Federal Government has adopted active measures for the formulation, implementation and management of public environmental protection policies. It denied that the Federal Government, the MMA, and other federal entities had failed to implement public policies to combat deforestation in the Amazon and to meet internationally agreed climate targets. It emphasized that investment in protecting and inspecting indigenous lands has increased, even during the COVID-19 pandemic. It denied that the country is failing to comply with international agreements and that the Federal Government is failing to comply with policies aimed at controlling illegal deforestation in the Amazon rainforest, nor that an unconstitutional environmental state of affairs has been established. It emphasized that the responsibility for recovering deforested areas should be attributed to those responsible for such acts, not the Federal Government. It argued that there was no causal link between the federal government and the environmental damage mentioned in the initial petition. Finally, required that the claims should be dismissed. 

In October 2022, the Institute for Amazonian Studies filed a request for urgent injunctive relief because it was necessary for the Federal Government to be urgently compelled to carry out direct and effective actions to start forest restoration processes in the Legal Amazon, with the aim of reducing the damage caused to the climate system. IEA emphasized that the measures adopted so far by the federal government have been innocuous in the face of growing deforestation, and that the federal government has continually failed to comply with its climate obligations. It requested that the Federal Government be granted a preliminary injunction ordering it to: (i) carry out forest restoration work in the Legal Amazon; (ii) begin reforesting the region within one year; (ii) restore illegally deforested areas above the legal permissive established in the PNMC and considering the PRODES 2020 and PRODES 2021 data; (iv) maintain forest restoration activities until the deforestation rate reaches a level of 3,925.06 km2. 925.06 km2; (v) the allocation of budgetary, technical and personnel resources for these purposes; (vi) the payment of a daily fine in the event of non-compliance with the measures; (vii) the determination that the measurement of the rate of deforestation in the Legal Amazon should use the official data provided by the PRODES system. Afterwards, the Institute filed a petition requesting that the request for injunctive relief be added, asking that the area of forest in the Legal Amazon that had been deforested above the maximum legal rate allowed by the PPCDAm be restored and presenting new arguments that indicate the upward trend in deforestation in the Amazon biome.

In November 2024, the court rejected the request for interim relief, but acknowledged that the plaintiff's arguments were credible, but that procedural issues were pending and required the parties and the MPF to comment on them in order for the relief to be granted. It also recognized that climate change affects humanity as a whole and the important role of the Amazon rainforest in this context. It ordered the reversal of the burden of proof, so that the Federal Government must prove compliance with the PPCDAm in terms of repairing environmental damage. In addition, it ruled that there was partial lis pendens between this action and ADPF 760 and ADO 54 and ordered that the proceedings be suspended for up to a year in order to await the progress of compliance with the judgments handed down in the aforementioned actions.

The IEA filed an interlocutory appeal challenging the decision that rejected the request for injunctive relief and ordered that the case be suspended for one year. The decision, however, was upheld because it was necessary to await the outcome of the proceedings ordered by the STF, in order to avoid overlapping proceedings for the same purpose.

In a decision dated February 2026, the court recognized the connection between the present Public Civil Action (ACP) and ADPF 760 and ADO 54, ordering the forwarding of the case files to the Supreme Federal Court (STF). It pointed to a partial overlap of claims between the aforementioned actions, addressing the omission of public authorities in combating deforestation in the Amazon biome and the fulfillment of climate goals. It emphasized that this was not a case of lis pendens, as there was no identity of parties, since the present action was filed by the IEA, while the others were filed by political parties. Furthermore, given that ADPF 760 was recognized as a structural process, the need for the case files of the present action to be forwarded to the STF was reinforced.

Institute of Amazonian Studies v. Brazil

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Institute of Amazonian Studies v. Brazil - complaint

Filed

Brazil

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An aim to achieve a quantifiable outcome within a given time-frame, set by an institution such as a national government.

Policy instruments are techniques or tools used by governing authorities to promote certain policies in order to achieve predetermined goals. Put simply, instruments are how a government tries to achieve its goals, with this taxonomy being focused on national policy instruments.

Risk is the potential for adverse consequences resulting from the dynamic interplay between (climate-related) hazards, exposure, and vulnerability of affected human or ecological systems.

Groups  of people who are adversely affected by climate change or the response to it

A set of principles, processes, and practices that build economic and political power to shift from an extractive economy to a regenerative economy.

Justice is the ethical and political framework that addresses fairness, including issues of responsibility, rights, and structural inequity.

Renewable energy means all forms of energy produced from renewable sources in a sustainable manner.

Fossil fuel is a generic term for non-renewable energy sources such as coal, fossil gas, and oil (including crude oil, and petroleum products), that can be used for electricity and heat generation. Fossil fuels are hydrocarbons formed from pressurised and heated organic material buried over millions of years.

Molecules in the atmosphere that play a key role in the greenhouse effect by trapping heat radiating from Earth’s surface.

Area of the economy in which actors engage in identical or related activities.

In human systems, the process of adjustment to actual or expected climate change and its effects, in order to moderate harm, increase resilience or exploit beneficial opportunities. In natural systems, the process of adjustment to actual climate change and its effects; human intervention may facilitate adjustment to expected climate change and its effects.

The management and allocation of funds, assets and investments to meet various objectives

People who are less able to respond to the effects of climate change due to having limited financial or physical assets

Zoning and spatial planning are both methods for guiding the distribution of people and activities in a space, and are regulatory restriction.

Financial actors and resources that are primarily directed towards climate change mitigation, adaptation and compensation.

Dedicated pool of financial resources for climate-related projects.

A target to reduce the prevalence of a greenhouse gas over a specific time frame

A commitment to balance GHG emissions with removal by a certain point in time, effectively reducing the net emissions to zero

Either money or something of monetary value is transferred between two or more organisations, people or countries.

Actions or measures to adapt terrestrial systems to climate change.

Actions or measures to adapt freshwater systems to climate change.

Actions to adapt human health, healthcare systems and well-being to climate change.

Actions or measures to adapt freshwater, coastal and marine systems to climate change.

Hot temperature extremes are daily maximum temperatures  that were exceeded on average once in a decade or once in 50 years, and includes heatwaves.

The release of heat-trapping gases, primarily from human activities such as burning fossil fuels, agriculture and industry.

A long-lived, colourless gas, chiefly emitted from fossil fuel combustion, deforestation and cement production.

A potent, short-lived greehouse gas, largely released from livestock, fossil fuel extraction and waste management.

Actions to reduce emissions in energy generation and supply.

Risks to the ecosystem health of the marine environment, including ocean warming, ocean acidification, and ocean deoxygenation, harming biodiversity, species health, ecosystem services, and coastal community livelihoods.

Extreme weather refers to events where a weather variable exceeds (or falls below) a threshold. Meaning it is significantly different from the average or usual weather pattern.

A drought is an extended period of unusually dry weather marked by a significant and sustained lack of precipitation, falling below a specific threshold over a large area for more than a month

Terrestrial means "of the earth" and relates to the risks to ecological system that includes all living organisms and their interactions within land-based environments, such as forests, grasslands, and deserts.

Air pollution involves harmful contaminants in the air, affecting both indoor and outdoor environments. It can lead to health issues like respiratory diseases and heart problems, and climate impacts such as global warming. Pollutants can damage plants, trees, habitats, and water bodies like rivers and lakes.

Social protection systems consist of policies that help people manage social risks in order to prevent poverty and maintain decent incomes and living standards

Social inclusion is the process of improving the terms on which individuals and groups take part in society—improving the ability, opportunity, and dignity of those disadvantaged on the basis of their identity.

Electrical energy generated from mechanical devices driven by flowing fresh water.

Fossil gas, commonly known as natural gas, is a fossil fuel consisting chiefly of methane with smaller amounts of other hydrocarbons and trace gases, found in underground deposits.

People with different national or cultural traditions from the dominant population

Social and cultural groups that share collective ancestral ties to the lands and natural resources where they live, occupy or from which they have been displaced

woman and genders outside of the gender binary

Any compulsory, unrequited payment to the government levied on corporations or individuals. This can be for environmental reasons, such as introducing a Carbon tax to set a price that emitters must pay for the greenhouse gases they emit.

Activities of industries that extract natural resources, such as mining, oil, and gas, for commercial use.

The activities of industries that transforms raw materials into finished goods through industrial processes.

This sector involves managing waste treatment, sanitation, pollution control and environmental cleanup.

Activities that involve planning, designing and building infrastructure, residential, and commercial structures.

This sector involves activities to move goods and people, alongside the storage of products.

Activities that provide lodging, food, and entertainment services to guests, including hotels, restaurants, and resorts.

This sector involves activities that impart knowledge and skills to individuals, including formal schooling, vocational training and educational support.

Activities of government agencies and institutions that provide public services, enforce laws and manage public resources.

This sector includes firms and individuals offering specialised expertise in fields such as law, accounting, consulting, science and engineering.

Activities of businesses and institutions that provide financial services and products to individuals and organisations.

Activities that involve the cultivation of crops and raising of livestock for food, fibre, and other products essential for human life and industry.

Activities that relate to the production of goods and services from forests.

Activities involving the catching, processing, and selling of fish for food, recreation, and industry.

This sector involves the distribution, treatment, and conservation of water resources.

This sector provides medical services, manufactures medical equipment, and develops pharmaceuticals to maintain and improve health.

Climate change can have a range of impacts on technological system. Extreme weather events can cause infrastructure failures like power outages or damage to roads and bridges, as well as the impacts from waste following natural disasters. Human activities also cause technological impacts, such as the risks posed by oil spillage and leaks.

Any substance with chemical properties that can cause physical harm to people or damage the environment, including ammonia, carbon monoxide, phosphine, chlorine, arsenic, cadmium, mercury, pesticides, dioxins, microplastics, benzene, asbestos, aflatoxins, fluoride, methanol, and toxins from marine sources.

Climate change impacts our society by disrupting the natural, economic and social systems we depend on. Physical hazards and underlying vulnerabilities can lead to increased resource competition for food and water, which can heighten the risk of conflict.

Slow onset events evolve gradually from incremental changes over many years or from increased frequency or intensity of recurring events. As defined in the Cancun Adaptation Framework (2010), slow onset events include risks and impacts from rising temperatures, desertification, biodiversity loss, land and forest degradation, glacial retreat, ocean acidification, sea level rise, and salinization.

Institute of Amazonian Studies v. Brazil - complaint

Target

Policy instrument

Risk

Impacted group

Just transition

Renewable energy

Fossil fuel

Greenhouse gas

Economic sector

Adaptation/resilience

Finance