diff --git a/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php b/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
index c849abacc..956cffbd2 100644
--- a/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
+++ b/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
@@ -97,6 +97,12 @@ class StoredObject implements Document, TrackCreationInterface
     #[ORM\OneToMany(mappedBy: 'storedObject', targetEntity: StoredObjectVersion::class, cascade: ['persist'], orphanRemoval: true)]
     private Collection&Selectable $versions;
 
+    /**
+     * @var Collection<int, StoredObjectLock>
+     */
+    #[ORM\OneToMany(mappedBy: 'storedObject', targetEntity: StoredObjectLock::class, cascade: ['persist', 'remove', 'refresh', 'merge'])]
+    private Collection $locks;
+
     /**
      * @param StoredObject::STATUS_* $status
      */
@@ -107,6 +113,22 @@ class StoredObject implements Document, TrackCreationInterface
         $this->uuid = Uuid::uuid4();
         $this->versions = new ArrayCollection();
         $this->prefix = self::generatePrefix();
+        $this->locks = new ArrayCollection();
+    }
+
+    /**
+     * @internal use @see{StoredObjectLock::__construct}
+     */
+    public function addLock(StoredObjectLock $lock): void
+    {
+        if (!$this->locks->contains($lock)) {
+            $this->locks->add($lock);
+        }
+    }
+
+    public function removeLock(StoredObjectLock $lock): void
+    {
+        $this->locks->removeElement($lock);
     }
 
     public function addGenerationTrial(): self
diff --git a/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectLock.php b/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectLock.php
new file mode 100644
index 000000000..40fe9b284
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectLock.php
@@ -0,0 +1,121 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Entity;
+
+use Chill\MainBundle\Entity\User;
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\Common\Collections\Collection;
+use Doctrine\ORM\Mapping as ORM;
+use Ramsey\Uuid\Uuid;
+use Ramsey\Uuid\UuidInterface;
+
+#[ORM\Entity]
+#[ORM\Table(name: 'stored_object_lock', schema: 'chill_doc')]
+class StoredObjectLock
+{
+    #[ORM\Id]
+    #[ORM\Column(type: 'uuid', unique: true)]
+    private UuidInterface $uuid;
+
+    /**
+     * @var Collection<int, User>
+     */
+    #[ORM\ManyToMany(targetEntity: User::class)]
+    #[ORM\JoinTable(name: 'stored_object_lock_user', schema: 'chill_doc')]
+    #[ORM\JoinColumn(referencedColumnName: 'uuid', nullable: false)]
+    private Collection $users;
+
+    /**
+     * @param list<User> $users
+     */
+    public function __construct(
+        #[ORM\ManyToOne(targetEntity: StoredObject::class, inversedBy: 'locks')]
+        private StoredObject $storedObject,
+        #[ORM\Column(type: 'string', length: 10, nullable: false, enumType: StoredObjectLockMethodEnum::class)]
+        private StoredObjectLockMethodEnum $method,
+        #[ORM\Column(type: 'datetimetz_immutable', nullable: false)]
+        private \DateTimeImmutable $createdAt,
+        #[ORM\Column(type: 'text', nullable: false, options: ['default' => ''])]
+        private string $token = '',
+        #[ORM\Column(type: 'datetimetz_immutable', nullable: true)]
+        private ?\DateTimeImmutable $expireAt = null,
+        array $users = [],
+    ) {
+        $this->uuid = Uuid::uuid7();
+        $this->users = new ArrayCollection();
+        $this->storedObject->addLock($this);
+
+        foreach ($users as $user) {
+            $this->addUser($user);
+        }
+    }
+
+    public function addUser(User $user): void
+    {
+        if (!$this->users->contains($user)) {
+            $this->users->add($user);
+        }
+    }
+
+    public function removeUser(User $user): void
+    {
+        $this->users->removeElement($user);
+    }
+
+    /**
+     * @return Collection<int, User>
+     */
+    public function getUsers(): Collection
+    {
+        return $this->users;
+    }
+
+    public function setToken(string $token): void
+    {
+        $this->token = $token;
+    }
+
+    public function setExpireAt(?\DateTimeImmutable $expireAt): void
+    {
+        $this->expireAt = $expireAt;
+    }
+
+    public function getUuid(): UuidInterface
+    {
+        return $this->uuid;
+    }
+
+    public function getStoredObject(): StoredObject
+    {
+        return $this->storedObject;
+    }
+
+    public function getMethod(): StoredObjectLockMethodEnum
+    {
+        return $this->method;
+    }
+
+    public function getToken(): string
+    {
+        return $this->token;
+    }
+
+    public function getCreatedAt(): \DateTimeImmutable
+    {
+        return $this->createdAt;
+    }
+
+    public function getExpireAt(): ?\DateTimeImmutable
+    {
+        return $this->expireAt;
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectLockMethodEnum.php b/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectLockMethodEnum.php
new file mode 100644
index 000000000..675c9fa85
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Entity/StoredObjectLockMethodEnum.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Entity;
+
+enum StoredObjectLockMethodEnum: string
+{
+    case WEBDAV = 'webdav';
+    case WOPI = 'wopi';
+}
diff --git a/src/Bundle/ChillDocStoreBundle/migrations/Version20260331122339.php b/src/Bundle/ChillDocStoreBundle/migrations/Version20260331122339.php
new file mode 100644
index 000000000..58cc9fff6
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/migrations/Version20260331122339.php
@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\Migrations\DocStore;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260331122339 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Add locks for stored objects';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('CREATE TABLE chill_doc.stored_object_lock (
+        uuid UUID NOT NULL, method VARCHAR(10) NOT NULL,
+        token TEXT DEFAULT \'\' NOT NULL, createdAt TIMESTAMP(0) WITH TIME ZONE NOT NULL,
+        expireAt TIMESTAMP(0) WITH TIME ZONE DEFAULT NULL, storedObject_id INT DEFAULT NULL,
+        PRIMARY KEY(uuid))');
+        $this->addSql('CREATE INDEX IDX_E66CB6516C99C13A ON chill_doc.stored_object_lock (storedObject_id)');
+        $this->addSql('COMMENT ON COLUMN chill_doc.stored_object_lock.uuid IS \'(DC2Type:uuid)\'');
+        $this->addSql('COMMENT ON COLUMN chill_doc.stored_object_lock.createdAt IS \'(DC2Type:datetimetz_immutable)\'');
+        $this->addSql('COMMENT ON COLUMN chill_doc.stored_object_lock.expireAt IS \'(DC2Type:datetimetz_immutable)\'');
+        $this->addSql('ALTER TABLE chill_doc.stored_object_lock ADD CONSTRAINT FK_E66CB6516C99C13A FOREIGN KEY (storedObject_id) REFERENCES chill_doc.stored_object (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+        $this->addSql('CREATE TABLE chill_doc.stored_object_lock_user (storedobjectlock_uuid UUID NOT NULL, user_id INT NOT NULL, PRIMARY KEY(storedobjectlock_uuid, user_id))');
+        $this->addSql('CREATE INDEX IDX_A4353741F52905D0 ON chill_doc.stored_object_lock_user (storedobjectlock_uuid)');
+        $this->addSql('CREATE INDEX IDX_A4353741A76ED395 ON chill_doc.stored_object_lock_user (user_id)');
+        $this->addSql('COMMENT ON COLUMN chill_doc.stored_object_lock_user.storedobjectlock_uuid IS \'(DC2Type:uuid)\'');
+        $this->addSql('ALTER TABLE chill_doc.stored_object_lock_user ADD CONSTRAINT FK_A4353741F52905D0 FOREIGN KEY (storedobjectlock_uuid) REFERENCES chill_doc.stored_object_lock (uuid) NOT DEFERRABLE INITIALLY IMMEDIATE');
+        $this->addSql('ALTER TABLE chill_doc.stored_object_lock_user ADD CONSTRAINT FK_A4353741A76ED395 FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_doc.stored_object_lock_user DROP CONSTRAINT FK_A4353741F52905D0');
+        $this->addSql('ALTER TABLE chill_doc.stored_object_lock_user DROP CONSTRAINT FK_A4353741A76ED395');
+        $this->addSql('DROP TABLE chill_doc.stored_object_lock_user');
+        $this->addSql('ALTER TABLE chill_doc.stored_object_lock DROP CONSTRAINT FK_E66CB6516C99C13A');
+        $this->addSql('DROP TABLE chill_doc.stored_object_lock');
+    }
+}